Gr 8 Natural Sciences Ch 1.2 SUM: Interactions and Interdependence within the Environment
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Questions and Answers

What is the primary function of chlorophyll in photosynthesis?

  • To produce oxygen
  • To absorb light energy from the Sun (correct)
  • To release energy for plant growth
  • To convert carbon dioxide into glucose

What is the purpose of testing for starch in plants?

  • To validate the occurrence of photosynthesis (correct)
  • To detect the presence of glucose
  • To measure the rate of respiration
  • To confirm the presence of oxygen

What is the by-product of respiration that is expelled through exhalation?

  • Water
  • Glucose
  • Oxygen
  • Carbon dioxide (correct)

What is the definition of ecology?

<p>The study of how living organisms interact with their environment (A)</p> Signup and view all the answers

What is the role of glucose in photosynthesis?

<p>To serve as food for the plant (A)</p> Signup and view all the answers

What is the purpose of using limewater?

<p>To test for the presence of carbon dioxide (A)</p> Signup and view all the answers

What is the energy source for respiration?

<p>Glucose (A)</p> Signup and view all the answers

What is the equation for photosynthesis?

<p>Carbon dioxide + Water → Glucose + Oxygen (B)</p> Signup and view all the answers

What is the property of starch?

<p>Insoluble in water and not sweet-tasting (B)</p> Signup and view all the answers

What is the role of respiration?

<p>To release energy from food (C)</p> Signup and view all the answers

What is the term for the global ecological system integrating all living beings and their relationships?

<p>Biosphere (B)</p> Signup and view all the answers

What is the branch of biology that deals with the relations of organisms to one another and to their physical surroundings?

<p>Ecology (B)</p> Signup and view all the answers

What is the term for a group of individuals of the same species living in a specific area at a specific time?

<p>Population (D)</p> Signup and view all the answers

What is the level of ecological organization that includes a community of living organisms and their non-living environment?

<p>Ecosystem (D)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Population Ecology (B)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (D)</p> Signup and view all the answers

What is the term for all the populations of different species that live and interact in a particular area?

<p>Community (B)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (D)</p> Signup and view all the answers

Which level of ecological organization includes all ecosystems on Earth?

<p>Biosphere (C)</p> Signup and view all the answers

What is the term for the act of two or more organisms having an effect on each other or their environment?

<p>Interact (D)</p> Signup and view all the answers

Which of the following is a characteristic of an ecosystem?

<p>A complex network of living and non-living components (D)</p> Signup and view all the answers

What is the term for the seasonal movement of organisms from one habitat to another?

<p>Migrate (C)</p> Signup and view all the answers

Which of the following is an example of mutualism?

<p>A bee pollinating a flower (A)</p> Signup and view all the answers

What is the term for the non-living physical and chemical elements of an ecosystem?

<p>Abiotic (D)</p> Signup and view all the answers

What is the by-product of photosynthesis that is essential for the respiration of most living organisms?

<p>Oxygen (A)</p> Signup and view all the answers

What is the term for an organism that hunts and feeds on other organisms?

<p>Predator (B)</p> Signup and view all the answers

Which of the following is an example of commensalism?

<p>A remora fish attached to a shark (D)</p> Signup and view all the answers

What is the general equation for respiration?

<p>Glucose + Oxygen → Carbon Dioxide + Water + Energy (D)</p> Signup and view all the answers

What is the term for the natural environment where an organism resides?

<p>Habitat (A)</p> Signup and view all the answers

What is the purpose of interactions between biotic and abiotic components in an ecosystem?

<p>To maintain a balance and flow of energy and nutrients (D)</p> Signup and view all the answers

What is the primary role of predators in an ecosystem?

<p>To control the population size of prey and maintain ecological balance (C)</p> Signup and view all the answers

What is the main difference between biotic and abiotic components in an ecosystem?

<p>Biotic components are living, while abiotic components are non-living (B)</p> Signup and view all the answers

What is the term for organisms that break down dead or decaying organisms, recycling nutrients back into the ecosystem?

<p>Decomposers (A)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>Light or chemical energy (C)</p> Signup and view all the answers

What is the term for organisms that eat both plants and animals?

<p>Omnivores (B)</p> Signup and view all the answers

What is the role of producers in an ecosystem?

<p>To form the base of the food chain, supplying energy to other organisms (D)</p> Signup and view all the answers

What is an example of an ecosystem that can range from small to extensive areas?

<p>All of the above (D)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (B)</p> Signup and view all the answers

What is the primary role of herbivores in an ecosystem?

<p>To feed on producers, transferring energy from one trophic level to the next (D)</p> Signup and view all the answers

What is the term for organisms that primarily eat insects?

<p>Insectivores (B)</p> Signup and view all the answers

Which type of consumer feeds on both plants and animals?

<p>Omnivore (B)</p> Signup and view all the answers

What is the role of decomposers in ecosystems?

<p>To break down dead or decaying matter (C)</p> Signup and view all the answers

What is a food chain?

<p>A linear sequence of energy and nutrient flow (B)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>To transfer energy within an ecosystem (D)</p> Signup and view all the answers

What is an example of a herbivore?

<p>Cow (A)</p> Signup and view all the answers

What is the term for the study of energy flow and nutrient cycling in ecosystems?

<p>Ecology (C)</p> Signup and view all the answers

What is the role of carnivores in ecosystems?

<p>To consume other animals (C)</p> Signup and view all the answers

What is a food web?

<p>A complex network of feeding relationships (A)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels?

<p>A decrease in energy available (A)</p> Signup and view all the answers

What is the role of insectivores in ecosystems?

<p>To primarily feed on insects (A)</p> Signup and view all the answers

What is the primary source of energy for life on Earth?

<p>The Sun (C)</p> Signup and view all the answers

What is the term for energy stored within chemical bonds?

<p>Chemical potential energy (D)</p> Signup and view all the answers

What is the organelle in plant cells where photosynthesis occurs?

<p>Chloroplast (A)</p> Signup and view all the answers

What is the process by which organisms release energy from food?

<p>Respiration (C)</p> Signup and view all the answers

What is the pigment in plants that absorbs light energy for photosynthesis?

<p>Chlorophyll (D)</p> Signup and view all the answers

What is the simple sugar produced by plants during photosynthesis?

<p>Glucose (B)</p> Signup and view all the answers

What is the term for energy from the Sun in the form of light?

<p>Radiant energy (C)</p> Signup and view all the answers

What is the storage form of glucose in plants that is insoluble in water?

<p>Starch (A)</p> Signup and view all the answers

What is the main reason for the extinction of the dinosaurs?

<p>Sudden climate change event (B)</p> Signup and view all the answers

What is the primary effect of habitat destruction on ecosystems?

<p>Disruption of ecosystem balance (B)</p> Signup and view all the answers

What is the Riverine Rabbit's main threat to survival?

<p>Habitat destruction and agricultural expansion (D)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To maintain ecosystem balance (D)</p> Signup and view all the answers

What is an adaptation?

<p>A change in an organism that helps it survive and reproduce in its environment (A)</p> Signup and view all the answers

What is the purpose of ecological monitoring?

<p>To detect imbalances early and allow for timely interventions (D)</p> Signup and view all the answers

What is camouflage?

<p>An adaptation that allows organisms to blend in with their surroundings (B)</p> Signup and view all the answers

What is the term for the movement of animals from one region to another?

<p>Migration (D)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Ecology (D)</p> Signup and view all the answers

What is the term for an adaptation that involves a physical characteristic of an organism?

<p>Structural adaptation (C)</p> Signup and view all the answers

What is the main advantage of biodiversity in ecosystems?

<p>It increases the efficiency of energy flow (C)</p> Signup and view all the answers

What happens to the remains of organisms when they die?

<p>Decomposers break them down, returning nutrients to the water and soil (C)</p> Signup and view all the answers

What happens when a key species is removed from a food web?

<p>Cascading effects occur throughout the ecosystem (A)</p> Signup and view all the answers

What is the primary impact of human activities on feeding relationships?

<p>Disruption of food chains and food webs, leading to declines in biodiversity and ecosystem health (B)</p> Signup and view all the answers

What is the main purpose of the energy pyramid?

<p>To show the distribution of energy among trophic levels (A)</p> Signup and view all the answers

What is the term for the maximum capacity of resources in an ecosystem to support the organisms living there?

<p>Limit (B)</p> Signup and view all the answers

What is the primary source of energy in food webs?

<p>The sun (C)</p> Signup and view all the answers

What is the term for a linear sequence of organisms where each is eaten by the next member in the chain?

<p>Food chain (B)</p> Signup and view all the answers

What is the consequence of a decline in primary producers in an ecosystem?

<p>A decline in primary consumers and subsequent trophic levels (D)</p> Signup and view all the answers

What percentage of energy is converted into biomass and is available to the next trophic level?

<p>10% (A)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Demography (D)</p> Signup and view all the answers

What is the term for a species that is at risk of extinction due to a significant decline in its population or habitat?

<p>Endangered (C)</p> Signup and view all the answers

What is the term for a complex network of interconnected food chains within an ecosystem?

<p>Food web (A)</p> Signup and view all the answers

What is the consequence of a natural disaster on an ecosystem?

<p>It can cause sudden and severe disruptions to ecosystems (B)</p> Signup and view all the answers

What is the term for an organism that eats producers (plants)?

<p>Primary consumer (B)</p> Signup and view all the answers

What is the term for the equilibrium between different trophic levels and the resources available in an ecosystem?

<p>Balance (B)</p> Signup and view all the answers

What is the term for each step in a food chain or food web?

<p>Trophic level (A)</p> Signup and view all the answers

What is the result of energy loss at each trophic level in a food chain?

<p>A decrease in energy available to the next trophic level (B)</p> Signup and view all the answers

What is the term for the long-term climate changes that can alter habitats, making them unsuitable for certain species?

<p>Climate Change (C)</p> Signup and view all the answers

What is the importance of food webs in ecosystems?

<p>They contribute to the stability and resilience of ecosystems (C)</p> Signup and view all the answers

What is the main goal of conservation efforts?

<p>To protect and preserve the natural environment (C)</p> Signup and view all the answers

Which activity is a key threat to ecosystems?

<p>Deforestation (B)</p> Signup and view all the answers

What is a benefit of biodiversity?

<p>Enhanced ecosystem services (D)</p> Signup and view all the answers

What can be a consequence of harming one component of an ecosystem?

<p>A ripple effect on other components (B)</p> Signup and view all the answers

What can help conserve habitats and species?

<p>Creating protected areas (B)</p> Signup and view all the answers

What is a role of environmental organizations?

<p>Advocating for environmental protection (D)</p> Signup and view all the answers

Why is community involvement essential in conservation efforts?

<p>Because local communities play a vital role in conservation (A)</p> Signup and view all the answers

What is a key component of sustainable development?

<p>Long-term benefits (D)</p> Signup and view all the answers

What is a threat posed by alien invasive species?

<p>All of the above (D)</p> Signup and view all the answers

Why are protected areas crucial for conservation?

<p>To conserve habitats and species (A)</p> Signup and view all the answers

What is the main purpose of camouflage in animals?

<p>To blend in with their surroundings and avoid predators (D)</p> Signup and view all the answers

What is an example of a behavioral adaptation in birds?

<p>Building a nest (D)</p> Signup and view all the answers

What is a major threat to rhino conservation in South Africa?

<p>Poaching for their horns (A)</p> Signup and view all the answers

What is the main purpose of hibernation in some animals?

<p>To conserve energy during winter (B)</p> Signup and view all the answers

How can individuals contribute to conservation efforts?

<p>By reducing their ecological footprint (A)</p> Signup and view all the answers

What is the primary goal of invasive species management?

<p>To control the spread of invasive species (B)</p> Signup and view all the answers

What is an example of a structural adaptation in plants?

<p>The ability to store water in the trunk (B)</p> Signup and view all the answers

What is the main purpose of flower timing in plants?

<p>To attract pollinators (B)</p> Signup and view all the answers

What is a conservation strategy used in rhino conservation in South Africa?

<p>Translocating rhinos to protected areas (C)</p> Signup and view all the answers

What is a method used to manage invasive species?

<p>Biological control using natural predators (D)</p> Signup and view all the answers

What is an example of a natural factor that can disrupt ecosystems?

<p>Natural disasters (D)</p> Signup and view all the answers

Why is public awareness important in conservation efforts?

<p>To promote the importance of conservation (D)</p> Signup and view all the answers

What is an example of a human factor that can disrupt ecosystems?

<p>Habitat destruction (C)</p> Signup and view all the answers

What is the main purpose of mimicry in animals?

<p>To provide protection or other advantages (D)</p> Signup and view all the answers

What is an example of a functional adaptation in plants?

<p>The ability to store water in the trunk (A)</p> Signup and view all the answers

What is the main purpose of migration in some animals?

<p>To find food and mate (B)</p> Signup and view all the answers

During photosynthesis, what is the primary source of energy for plants?

<p>Light energy from the Sun (C)</p> Signup and view all the answers

What is the purpose of using iodine in testing for photosynthesis?

<p>To identify the presence of starch (C)</p> Signup and view all the answers

What is the primary reactant in the process of respiration?

<p>Glucose (B)</p> Signup and view all the answers

What is the term for the study of interactions between living organisms and their environment?

<p>Ecology (C)</p> Signup and view all the answers

What is the by-product of respiration that is often tested for using limewater?

<p>Carbon dioxide (D)</p> Signup and view all the answers

What is the term for the process by which cells break down glucose to release energy?

<p>Respiration (B)</p> Signup and view all the answers

What is the primary role of glucose in plants?

<p>To store energy for later use (B)</p> Signup and view all the answers

What is the term for the study of the relationships between organisms and their environments?

<p>Ecology (B)</p> Signup and view all the answers

What is the product of photosynthesis that is essential for the respiration of most living organisms?

<p>Glucose (C)</p> Signup and view all the answers

What is the term for the biochemical process by which cells release energy from glucose?

<p>Respiration (D)</p> Signup and view all the answers

What is the primary role of predators in an ecosystem?

<p>To control the population size of prey (A)</p> Signup and view all the answers

Which type of consumer is classified based on their dietary habits?

<p>Consumers (C)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (B)</p> Signup and view all the answers

Which ecosystem can range from a small pond or a riverbank to extensive areas?

<p>Any ecosystem (A)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>Sunlight (D)</p> Signup and view all the answers

What is the term for the pathways through which energy and nutrients flow within an ecosystem?

<p>Feeding relationships (B)</p> Signup and view all the answers

What is the role of producers in an ecosystem?

<p>To form the base of the food chain (B)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels?

<p>Energy is lost (A)</p> Signup and view all the answers

Which type of organism cannot produce its own food and must eat other organisms for energy?

<p>Consumer (B)</p> Signup and view all the answers

What is the term for organisms that eat both plants and animals?

<p>Omnivore (C)</p> Signup and view all the answers

What is the primary function of omnivores in ecosystems?

<p>To occupy multiple trophic levels and play a flexible role in food webs (A)</p> Signup and view all the answers

What is the primary source of energy for consumers in an ecosystem?

<p>Energy captured by producers through photosynthesis (B)</p> Signup and view all the answers

What is the significance of decomposers in ecosystems?

<p>They break down dead or decaying matter and recycle nutrients (C)</p> Signup and view all the answers

What is the result of the loss of energy as it moves up trophic levels?

<p>A decrease in the energy available to consumers (C)</p> Signup and view all the answers

What is the primary role of insectivores in ecosystems?

<p>To feed on insects and maintain ecosystem balance (C)</p> Signup and view all the answers

What is the purpose of food webs in ecosystems?

<p>To illustrate the interconnectedness of various food chains (C)</p> Signup and view all the answers

What is the primary role of carnivores in ecosystems?

<p>To control the populations of herbivores and maintain ecosystem balance (B)</p> Signup and view all the answers

What is the significance of energy transfer in ecosystems?

<p>It is responsible for the transfer of energy from one trophic level to the next (C)</p> Signup and view all the answers

What is the role of herbivores in ecosystems?

<p>To consume producers and initiate energy flow (A)</p> Signup and view all the answers

What is the significance of predator-prey relationships in ecosystems?

<p>They regulate population sizes and maintain ecosystem balance (B)</p> Signup and view all the answers

What is the primary source of energy for living organisms on Earth?

<p>Radiant energy (C)</p> Signup and view all the answers

What is the pigment that absorbs light energy for photosynthesis?

<p>Chlorophyll (D)</p> Signup and view all the answers

Where does photosynthesis occur in plant cells?

<p>Chloroplasts (A)</p> Signup and view all the answers

What is the product of photosynthesis that is essential for the respiration of most living organisms?

<p>Glucose (C)</p> Signup and view all the answers

What is the term for the energy stored within chemical bonds?

<p>Chemical potential energy (B)</p> Signup and view all the answers

What is the storage form of glucose in plants that is insoluble in water?

<p>Starch (C)</p> Signup and view all the answers

What is the process by which plants convert light energy into chemical energy?

<p>Photosynthesis (A)</p> Signup and view all the answers

What is the term for the process by which organisms release energy from food?

<p>Respiration (B)</p> Signup and view all the answers

What is the primary function of camouflage in animals?

<p>To blend in with their surroundings to avoid predators (C)</p> Signup and view all the answers

Which of the following is an example of a behavioral adaptation in plants?

<p>Flower timing to attract pollinators (D)</p> Signup and view all the answers

What is the primary reason for the Riverine Rabbit's critically endangered status?

<p>Habitat destruction (A)</p> Signup and view all the answers

Which of the following is an example of a natural factor that can disrupt ecosystems?

<p>Floods (C)</p> Signup and view all the answers

What is the primary function of hibernation in animals?

<p>To conserve energy (B)</p> Signup and view all the answers

Which of the following is an example of a structural adaptation in plants?

<p>Umbrella-shaped canopy to maximize light exposure (D)</p> Signup and view all the answers

What is the primary function of mimicry in animals?

<p>To resemble another species to gain protection or advantage (B)</p> Signup and view all the answers

Which of the following is an example of a functional adaptation in plants?

<p>Water storage in the trunk (A)</p> Signup and view all the answers

What is the primary impact of human activities on ecosystems?

<p>Permanent alterations in habitats (C)</p> Signup and view all the answers

What is the primary reason for the adaptation of birds building safe nests to protect their young?

<p>To avoid predators (C)</p> Signup and view all the answers

What is the primary function of the interaction between biotic and abiotic components in an ecosystem?

<p>To regulate the flow of energy and nutrients (D)</p> Signup and view all the answers

Which of the following is an example of parasitism?

<p>Ticks and dogs (C)</p> Signup and view all the answers

What is the by-product of photosynthesis that is essential for the respiration of most living organisms?

<p>Oxygen (B)</p> Signup and view all the answers

What type of interaction occurs when two or more species compete for the same limited resource?

<p>Competition (B)</p> Signup and view all the answers

What is the term for the natural environment where an organism resides?

<p>Habitat (D)</p> Signup and view all the answers

Which of the following is an example of mutualism?

<p>Bees and flowers (A)</p> Signup and view all the answers

What is the term for the process by which plants break down glucose molecules to release energy for cellular processes?

<p>Respiration (C)</p> Signup and view all the answers

What is the result of the interactions between biotic and abiotic components in an ecosystem?

<p>The maintenance of balance and flow of energy and nutrients (A)</p> Signup and view all the answers

What is the term for the movement of organisms from one habitat to another?

<p>Migrate (B)</p> Signup and view all the answers

Which of the following is an example of commensalism?

<p>Remora fish and sharks (B)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To protect and preserve the natural environment to ensure ecosystem health and biodiversity (A)</p> Signup and view all the answers

What is a major threat to ecosystems due to human activities?

<p>Habitat destruction (C)</p> Signup and view all the answers

What is the effect of biodiversity on ecosystem stability?

<p>It increases ecosystem stability (C)</p> Signup and view all the answers

What is an example of a conservation effort?

<p>Establishing a national park (A)</p> Signup and view all the answers

What is a key threat to rhino conservation in South Africa?

<p>Poaching for their horns (B)</p> Signup and view all the answers

What is the result of the loss of a predator in an ecosystem?

<p>The prey species will overpopulate and degrade the habitat (B)</p> Signup and view all the answers

What is a common method used to manage invasive species like the water hyacinth?

<p>Mechanical removal (D)</p> Signup and view all the answers

What is the role of environmental organizations in conservation?

<p>To advocate for environmental protection and conduct conservation projects (D)</p> Signup and view all the answers

How can individuals contribute to conservation efforts?

<p>All of the above (D)</p> Signup and view all the answers

What is the importance of community involvement in conservation?

<p>It is crucial for the success of conservation efforts (D)</p> Signup and view all the answers

What is a consequence of climate change on ecosystems?

<p>It will disrupt habitats and the survival of many species (A)</p> Signup and view all the answers

What is a conservation strategy implemented to protect rhinos in South Africa?

<p>All of the above (D)</p> Signup and view all the answers

What is the impact of invasive species like the water hyacinth on aquatic ecosystems?

<p>They outcompete native plants (B)</p> Signup and view all the answers

What is the role of legislation and policy in conservation?

<p>To protect the environment and control pollution (D)</p> Signup and view all the answers

Why is public education important in managing invasive species?

<p>It helps to prevent the spread of invasive species (A)</p> Signup and view all the answers

What is the benefit of biodiversity for human society?

<p>It provides numerous benefits, including ecosystem services and cultural opportunities (C)</p> Signup and view all the answers

What is the highest level of ecological organization?

<p>Biosphere (B)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Population Ecology (B)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (A)</p> Signup and view all the answers

What is the level of ecological organization that includes a community of living organisms and their non-living environment?

<p>Ecosystem (C)</p> Signup and view all the answers

What is the term for all the populations of different species that live and interact in a particular area?

<p>Community (D)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (D)</p> Signup and view all the answers

What is the term for the act of two or more organisms having an effect on each other or their environment?

<p>Interact (D)</p> Signup and view all the answers

What is the primary function of decomposers in an ecosystem?

<p>To break down dead or decaying organisms, recycling nutrients back into the ecosystem (A)</p> Signup and view all the answers

What is the level of ecological organization that includes a group of organisms of the same species living in the same area at the same time and can interbreed?

<p>Population (A)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels in a food chain or food web?

<p>Energy decreases significantly at each trophic level (C)</p> Signup and view all the answers

What is the term for the study of energy flow and nutrient cycling in ecosystems?

<p>Systems Ecology (D)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>The sun (B)</p> Signup and view all the answers

What is the term for the global ecological system integrating all living beings and their relationships?

<p>Biosphere (A)</p> Signup and view all the answers

What is the role of primary consumers in a food chain or food web?

<p>To eat producers (A)</p> Signup and view all the answers

What is the purpose of a food web in an ecosystem?

<p>To illustrate the complex network of interconnected food chains (A)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>To maintain ecological balance and stability (A)</p> Signup and view all the answers

What is the term for the graphical representation of the energy available at each trophic level in an ecosystem?

<p>Energy pyramid (D)</p> Signup and view all the answers

What is the result of human activities such as overfishing, deforestation, pollution, and climate change on feeding relationships in ecosystems?

<p>Disruption of food chains and food webs, leading to declines in biodiversity and ecosystem health (C)</p> Signup and view all the answers

What is the role of tertiary consumers in a food chain or food web?

<p>To eat secondary consumers (C)</p> Signup and view all the answers

What is the importance of understanding energy flow and nutrient cycling in ecosystems?

<p>To maintain ecological balance and stability (B)</p> Signup and view all the answers

What is the main reason for the extinction of dinosaurs?

<p>A sudden climate change event (A)</p> Signup and view all the answers

Which human activity has contributed significantly to the decline of the Riverine Rabbit?

<p>Habitat destruction and agricultural expansion (C)</p> Signup and view all the answers

What is the primary goal of establishing protected areas?

<p>To conserve habitats and provide safe havens for endangered species (B)</p> Signup and view all the answers

What is the term for changes in organisms that help them survive and reproduce in their environments?

<p>Adaptation (C)</p> Signup and view all the answers

What type of adaptation allows organisms to blend in with their surroundings?

<p>Camouflage (C)</p> Signup and view all the answers

What is the term for the introduction of non-native species that can disrupt local ecosystems?

<p>Invasive species (B)</p> Signup and view all the answers

What is the main purpose of ecological monitoring?

<p>To detect imbalances early and allow for timely interventions (D)</p> Signup and view all the answers

What is the term for the process of adapting to environmental changes over time?

<p>Evolution (B)</p> Signup and view all the answers

What type of adaptation involves physical characteristics of organisms that enhance survival?

<p>Structural adaptation (D)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Ecology (C)</p> Signup and view all the answers

What is the primary benefit of biodiversity in ecosystems?

<p>It enhances the efficiency of energy flow and reduces the impact of population fluctuations (C)</p> Signup and view all the answers

What is the consequence of removing a key species from a food web?

<p>It can have cascading effects on the entire ecosystem (B)</p> Signup and view all the answers

What is the primary function of an energy pyramid in an ecosystem?

<p>It illustrates the flow of energy from one level to the next (C)</p> Signup and view all the answers

What is the term for the maximum capacity of resources in an ecosystem to support the organisms living there?

<p>Limit (B)</p> Signup and view all the answers

What is the consequence of disrupting the balance of an ecosystem?

<p>It can have significant consequences for all species involved (D)</p> Signup and view all the answers

What is the term for the population of a species that is at risk of extinction due to a significant decline in its population or habitat?

<p>Endangered (D)</p> Signup and view all the answers

What is the primary factor that affects population growth in an ecosystem?

<p>All of the above (D)</p> Signup and view all the answers

What is the consequence of the loss of primary producers in an ecosystem?

<p>It can have cascading effects on the entire ecosystem (D)</p> Signup and view all the answers

What is the term for the equilibrium between different trophic levels and the resources available in an ecosystem?

<p>Ecosystem balance (D)</p> Signup and view all the answers

What is the primary factor that determines the population growth of a species in an ecosystem?

<p>Availability of resources (C)</p> Signup and view all the answers

What is the term for the global sum of all ecosystems?

<p>Biosphere (A)</p> Signup and view all the answers

What is the main difference between a community and a population?

<p>A population includes only one species, while a community includes multiple species (B)</p> Signup and view all the answers

What is the focus of population ecology?

<p>Studying how populations grow and interact with their environment (A)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (B)</p> Signup and view all the answers

What is the term for the study of the relationships between organisms and their environments?

<p>Ecology (D)</p> Signup and view all the answers

What is the level of ecological organization that includes living organisms and their non-living environment?

<p>Ecosystem (A)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (B)</p> Signup and view all the answers

What level of ecological organization includes all living beings and their interactions with the elements of the Earth's atmosphere, hydrosphere, and lithosphere?

<p>Biosphere (C)</p> Signup and view all the answers

What is the term for the act of two or more organisms having an effect on each other or their environment?

<p>Interaction (B)</p> Signup and view all the answers

What is the term for all the populations of different species that live and interact in a particular area?

<p>Community (B)</p> Signup and view all the answers

What is the primary function of biotic components in an ecosystem?

<p>To maintain the balance and flow of energy and nutrients (A)</p> Signup and view all the answers

What is the process by which plants convert carbon dioxide and water into glucose and oxygen?

<p>Photosynthesis (D)</p> Signup and view all the answers

What type of interaction occurs when one organism benefits and the other is neither helped nor harmed?

<p>Commensalism (D)</p> Signup and view all the answers

What is the term for the movement of organisms from one habitat to another at different times of the year?

<p>Migrate (A)</p> Signup and view all the answers

What is the term for the living components of an ecosystem?

<p>Biotic (B)</p> Signup and view all the answers

What is the primary role of producers in an ecosystem?

<p>To produce energy for other organisms (C)</p> Signup and view all the answers

What type of interaction occurs when two or more species vie for the same limited resource?

<p>Competition (B)</p> Signup and view all the answers

What is the term for the non-living physical and chemical elements of an ecosystem?

<p>Abiotic (B)</p> Signup and view all the answers

What is the process by which organisms break down glucose molecules to release energy for cellular processes?

<p>Respiration (C)</p> Signup and view all the answers

What type of interaction occurs when one organism benefits and the other is harmed?

<p>Parasitism (D)</p> Signup and view all the answers

What is the primary function of glucose produced during photosynthesis?

<p>To release energy for growth and maintenance (D)</p> Signup and view all the answers

What is the purpose of the iodine test for starch in plants?

<p>To confirm the presence of starch, indicating photosynthesis (D)</p> Signup and view all the answers

What is the primary reactant required for respiration?

<p>Glucose and oxygen (C)</p> Signup and view all the answers

What is the role of energy released during respiration?

<p>To drive essential processes in organisms (A)</p> Signup and view all the answers

What is the term for the scientific study of how living organisms interact with each other and their environment?

<p>Ecology (A)</p> Signup and view all the answers

What is the purpose of using limewater to test for carbon dioxide?

<p>To detect the presence of carbon dioxide (C)</p> Signup and view all the answers

What is the role of starch in plants?

<p>To store energy for long-term use (D)</p> Signup and view all the answers

What is the by-product of respiration that must be efficiently removed from the organism?

<p>Carbon dioxide and water (D)</p> Signup and view all the answers

What is the relationship between glucose and energy in respiration?

<p>Glucose is broken down to release energy (C)</p> Signup and view all the answers

What is the purpose of testing for the presence of starch and carbon dioxide in organisms?

<p>To verify the occurrence of photosynthesis and respiration (B)</p> Signup and view all the answers

What happens to the energy consumed at each trophic level in a food chain?

<p>About 90% is lost as heat, and 10% is converted into biomass (C)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>The sun (D)</p> Signup and view all the answers

What is the term for a network of interconnected food chains?

<p>Food web (C)</p> Signup and view all the answers

What is the role of secondary consumers in a food chain?

<p>To eat primary consumers (C)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>They contribute to the stability and resilience of ecosystems (C)</p> Signup and view all the answers

What is the term for an organization of living organisms and their non-living environment?

<p>Ecosystem (B)</p> Signup and view all the answers

What happens to the remains of organisms when they die?

<p>Decomposers break them down, returning nutrients to the water and soil (B)</p> Signup and view all the answers

What is the term for a graphical representation of the energy available at each trophic level?

<p>Food pyramid (B)</p> Signup and view all the answers

What is the result of human activities such as overfishing, deforestation, pollution, and climate change on feeding relationships?

<p>They disrupt food chains and food webs, leading to declines in biodiversity and ecosystem health (A)</p> Signup and view all the answers

What is the term for an organism that eats producers?

<p>Primary consumer (C)</p> Signup and view all the answers

What is the primary function of predators in an ecosystem?

<p>To control the population size of prey and maintain ecological balance (D)</p> Signup and view all the answers

What is the main difference between biotic and abiotic components in an ecosystem?

<p>Biotic components are living, while abiotic components are non-living (B)</p> Signup and view all the answers

Which type of consumer feeds on both plants and animals?

<p>Omnivore (D)</p> Signup and view all the answers

What is the primary role of producers in an ecosystem?

<p>To produce their own food through photosynthesis or chemosynthesis (B)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (A)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels?

<p>Energy is lost (C)</p> Signup and view all the answers

What is the primary consequence of removing a key species from a food web?

<p>Cascading effects on the entire ecosystem (B)</p> Signup and view all the answers

What is the term for the natural environment where an organism resides?

<p>Habitat (B)</p> Signup and view all the answers

Which type of ecosystem can range from small to extensive areas?

<p>All of the above (D)</p> Signup and view all the answers

Which of the following best describes the role of biodiversity in ecosystems?

<p>It enhances the efficiency of energy flow and reduces the impact of population fluctuations (D)</p> Signup and view all the answers

What is the term for the maximum capacity of resources in an ecosystem to support the organisms living there?

<p>Limit (D)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>Light energy (D)</p> Signup and view all the answers

What is the primary reason for the decline of primary consumers in an ecosystem?

<p>Lack of primary producers (B)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>They illustrate how organisms obtain energy and nutrients (D)</p> Signup and view all the answers

What is the term for the equilibrium between different trophic levels and the resources available in an ecosystem?

<p>Ecosystem balance (C)</p> Signup and view all the answers

Which factor can cause sudden and severe disruptions to ecosystems?

<p>Natural disasters (B)</p> Signup and view all the answers

What is the primary concern when a species is removed from a food web?

<p>The effect on ecosystem balance (D)</p> Signup and view all the answers

What is the term for the study of population growth and decline in relation to ecosystem balance?

<p>Population dynamics (A)</p> Signup and view all the answers

Which of the following best describes the energy pyramid?

<p>A diagram showing the distribution of energy among trophic levels (D)</p> Signup and view all the answers

What is the primary consequence of a decline in primary producers in an ecosystem?

<p>A decline in secondary consumers (D)</p> Signup and view all the answers

What is the primary function of herbivores in an ecosystem?

<p>To transfer energy from plants to higher trophic levels (B)</p> Signup and view all the answers

Which type of consumer is characterized by a diverse diet that includes both plants and animals?

<p>Omnivore (D)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels?

<p>Energy decreases (D)</p> Signup and view all the answers

What is the primary function of decomposers in an ecosystem?

<p>To break down dead or decaying organic matter, recycling nutrients (D)</p> Signup and view all the answers

What is the primary difference between a food chain and a food web?

<p>A food chain illustrates the interconnectedness of various food chains (C)</p> Signup and view all the answers

What is the term for the process of energy transfer from one organism to another within an ecosystem?

<p>Energy flow (A)</p> Signup and view all the answers

Which type of consumer is characterized by a diet that primarily consists of insects?

<p>Insectivore (A)</p> Signup and view all the answers

What is the primary role of predators in an ecosystem?

<p>To regulate the populations of herbivores (D)</p> Signup and view all the answers

What is the primary cause of the extinction of dinosaurs?

<p>Climate change (B)</p> Signup and view all the answers

What is the term for the study of the feeding relationships within an ecosystem?

<p>Trophic ecology (A)</p> Signup and view all the answers

Which human activity is a major contributor to the decline of the Riverine Rabbit?

<p>Habitat destruction (D)</p> Signup and view all the answers

What is the purpose of ecological monitoring?

<p>To detect imbalances in ecosystems and allow for timely interventions (C)</p> Signup and view all the answers

What is the primary function of omnivores in an ecosystem?

<p>To occupy multiple trophic levels, playing a flexible role in food webs (B)</p> Signup and view all the answers

What is an adaptation?

<p>A change in an organism that helps it survive and reproduce in its environment (B)</p> Signup and view all the answers

What is an example of a structural adaptation?

<p>Long legs and strong muscles (A)</p> Signup and view all the answers

What is the term for the process of organisms changing over time to better survive in their environment?

<p>Adaptation (C)</p> Signup and view all the answers

What is the purpose of conservation efforts?

<p>To prevent the extinction of endangered species and maintain ecosystem balance (D)</p> Signup and view all the answers

What is the term for the introduction of non-native species that disrupt local ecosystems?

<p>Invasive species (A)</p> Signup and view all the answers

What is the primary goal of establishing protected areas?

<p>To conserve habitats and provide safe havens for endangered species (A)</p> Signup and view all the answers

What is the term for the seasonal movement of animals from one region to another?

<p>Migration (A)</p> Signup and view all the answers

What is the main purpose of camouflage in animals?

<p>To blend in with their surroundings to avoid predators (B)</p> Signup and view all the answers

What is the term for the process by which plants produce food?

<p>Photosynthesis (B)</p> Signup and view all the answers

Which of the following is an example of a structural adaptation in plants?

<p>Deep roots to access groundwater (B)</p> Signup and view all the answers

What is the main reason why the Riverine Rabbit is critically endangered?

<p>Habitat destruction (D)</p> Signup and view all the answers

What is the term for the ability of one species to resemble another, providing protection or other advantages?

<p>Mimicry (C)</p> Signup and view all the answers

Which of the following is an example of a human-induced change to the environment?

<p>Habitat destruction (D)</p> Signup and view all the answers

What is the term for the process by which plants store water in their trunks to endure long dry periods?

<p>Water storage (C)</p> Signup and view all the answers

What is the term for the adaptation of birds building safe nests to protect their young?

<p>Behavioral adaptation (B)</p> Signup and view all the answers

Which of the following is an example of a natural factor that can disrupt ecosystems?

<p>Floods (A)</p> Signup and view all the answers

What is the term for the adaptation of wildebeests migrating to find fresh grazing grounds?

<p>Migration (C)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To protect and preserve the natural environment to ensure ecosystem health and biodiversity (B)</p> Signup and view all the answers

What is a major threat to ecosystem health?

<p>Pollution (A), Habitat destruction (D)</p> Signup and view all the answers

What is a benefit of biodiversity?

<p>Ecosystem services such as pollination and water purification (B)</p> Signup and view all the answers

What is the term for the interconnectedness of ecosystems?

<p>Ripple effect (B)</p> Signup and view all the answers

What is an important role of environmental organizations in conservation efforts?

<p>Conducting research and implementing conservation projects (D)</p> Signup and view all the answers

What is the purpose of establishing protected areas?

<p>To conserve habitats and species (D)</p> Signup and view all the answers

What is a key aspect of sustainable development?

<p>Long-term benefits (A)</p> Signup and view all the answers

What is the result of human activities that disrupt ecosystem balance?

<p>Reduced ecosystem services (B)</p> Signup and view all the answers

What is a critical role of local communities in conservation efforts?

<p>Playing a vital role in conservation (B)</p> Signup and view all the answers

What is a key benefit of legislation and policy in conservation efforts?

<p>Protection of the environment (A)</p> Signup and view all the answers

Which of the following types of energy do plants convert during photosynthesis?

<p>Chemical potential energy (B)</p> Signup and view all the answers

Where does photosynthesis occur in plant cells?

<p>Chloroplasts (D)</p> Signup and view all the answers

What is the main function of chlorophyll in plants?

<p>To absorb light energy (D)</p> Signup and view all the answers

Which of the following is a product of photosynthesis?

<p>Glucose (D)</p> Signup and view all the answers

What is the term for the energy from the Sun that is available for photosynthesis?

<p>Radiant energy (C)</p> Signup and view all the answers

What is the term for the process by which organisms release energy from food?

<p>Respiration (C)</p> Signup and view all the answers

Which of the following is not a characteristic of starch?

<p>Soluble in water (D)</p> Signup and view all the answers

What is the purpose of chlorophyll in plants?

<p>To absorb light energy for photosynthesis (A)</p> Signup and view all the answers

What is a major threat to rhino conservation in South Africa?

<p>Poaching for their horns (A)</p> Signup and view all the answers

What is a strategy used to manage invasive species?

<p>Mechanical removal (C)</p> Signup and view all the answers

What can individuals do to contribute to conservation efforts?

<p>Reduce their ecological footprint (A)</p> Signup and view all the answers

What is the purpose of anti-poaching patrols in rhino conservation?

<p>To protect rhinos from poachers (C)</p> Signup and view all the answers

What is a benefit of engaging communities in conservation efforts?

<p>Enhanced conservation outcomes (B)</p> Signup and view all the answers

What is a strategy used to conserve rhinos in South Africa?

<p>Translocation of rhinos to safer areas (D)</p> Signup and view all the answers

What is the primary role of radiant energy in the process of photosynthesis?

<p>To be absorbed by chlorophyll and converted into chemical potential energy (D)</p> Signup and view all the answers

What is the term for the energy stored within chemical bonds, available for release in chemical reactions?

<p>Chemical Potential Energy (C)</p> Signup and view all the answers

In which organelles of plant cells does photosynthesis occur?

<p>Chloroplasts (D)</p> Signup and view all the answers

What is the term for the process by which organisms release energy from food?

<p>Respiration (C)</p> Signup and view all the answers

What is the term for the green pigment in plants that absorbs light energy for photosynthesis?

<p>Chlorophyll (C)</p> Signup and view all the answers

What is the term for the simple sugar produced by plants during photosynthesis, which is a primary energy source for living organisms?

<p>Glucose (B)</p> Signup and view all the answers

What is the term for the storage form of glucose in plants, which is insoluble in water?

<p>Starch (A)</p> Signup and view all the answers

What is the term for the ability of a substance to dissolve in a liquid?

<p>Soluble (B)</p> Signup and view all the answers

What is the main difference between community ecology and ecosystem ecology?

<p>Community ecology looks at feeding relationships, while ecosystem ecology examines energy flow and nutrient cycling. (D)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Population ecology (A)</p> Signup and view all the answers

Which level of ecological organization includes all living organisms and their interactions with the elements of the atmosphere, hydrosphere, and lithosphere?

<p>Biosphere (D)</p> Signup and view all the answers

What is the term for the interactions between organisms and their environment?

<p>Interact (B)</p> Signup and view all the answers

Which level of ecological organization includes a community of living organisms and their non-living environment?

<p>Ecosystem (C)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (C)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (C)</p> Signup and view all the answers

Which level of ecological organization is made up of different populations of organisms that interact in a certain area?

<p>Community (C)</p> Signup and view all the answers

What is the term for the global ecological system integrating all living beings and their relationships?

<p>Biosphere (C)</p> Signup and view all the answers

Which of the following is an example of a community?

<p>A group of different animals and plants interacting in a game reserve (B)</p> Signup and view all the answers

What is the primary reason for the rapid growth of the zebra population in Kruger National Park over the past four years?

<p>Favorable environmental conditions or increased food availability (B)</p> Signup and view all the answers

What is the fundamental difference between biotic and abiotic components in an ecosystem?

<p>Biotic components are living, while abiotic components are non-living (A)</p> Signup and view all the answers

What is the ultimate source of energy for respiration in most living organisms?

<p>Sunlight (C)</p> Signup and view all the answers

What is the term for the interaction between two species in which one species benefits and the other is neither helped nor harmed?

<p>Commensalism (A)</p> Signup and view all the answers

What is the overall result of the interactions between biotic and abiotic components in an ecosystem?

<p>A balance in the flow of energy and nutrients (C)</p> Signup and view all the answers

What is the term for the process by which plants convert carbon dioxide and water into glucose and oxygen?

<p>Photosynthesis (B)</p> Signup and view all the answers

What is the term for the movement of organisms from one habitat to another in search of food or shelter?

<p>Migration (A)</p> Signup and view all the answers

What is the term for the level of ecological organization that includes all ecosystems on Earth?

<p>Biosphere (C)</p> Signup and view all the answers

What is the term for the interaction between two species in which one species benefits and the other is harmed?

<p>Parasitism (A)</p> Signup and view all the answers

What is the primary function of predators in an ecosystem?

<p>To control population sizes (A)</p> Signup and view all the answers

What is the primary function of glucose produced during photosynthesis?

<p>To release energy for the plant's growth and maintenance (D)</p> Signup and view all the answers

What is the significance of the iodine test in detecting photosynthesis?

<p>It indicates the presence of starch, a product of glucose storage (D)</p> Signup and view all the answers

What is the primary function of producers in an ecosystem?

<p>To form the base of the food chain, supplying energy to all other organisms (C)</p> Signup and view all the answers

What is the primary role of oxygen in the process of respiration?

<p>To initiate the breakdown of glucose into energy (D)</p> Signup and view all the answers

Which type of feeding relationship is characterized by lions (predators) hunting zebras (prey)?

<p>Predator-prey dynamics (D)</p> Signup and view all the answers

What is the purpose of limewater in detecting the presence of carbon dioxide?

<p>To indicate the presence of carbon dioxide through a change in color (A)</p> Signup and view all the answers

What is the significance of the relationship between living organisms and their environment in ecology?

<p>It emphasizes the dependence of living things on one another for survival (D)</p> Signup and view all the answers

What is an example of a biotic component in a pond ecosystem?

<p>Fish (B)</p> Signup and view all the answers

What is the term for the study of energy flow and nutrient cycling in ecosystems?

<p>Trophic ecology (C)</p> Signup and view all the answers

What is the primary difference between glucose and starch?

<p>Glucose is soluble in water, while starch is insoluble (B)</p> Signup and view all the answers

What is the ultimate source of energy for the process of respiration?

<p>The energy released from the sun during photosynthesis (A)</p> Signup and view all the answers

Which type of consumer eats both plants and animals?

<p>Omnivore (C)</p> Signup and view all the answers

What is the primary role of respiration in the process of energy production?

<p>To convert glucose into energy for the organism's growth and maintenance (B)</p> Signup and view all the answers

What is the primary role of decomposers in ecosystems?

<p>To break down dead or decaying organisms, recycling nutrients back into the ecosystem (B)</p> Signup and view all the answers

What is an example of a feeding relationship in a pond ecosystem?

<p>Fish (consumers) eating algae (producers) (C)</p> Signup and view all the answers

What is the significance of the relationship between glucose and oxygen in the process of respiration?

<p>Oxygen facilitates the breakdown of glucose into energy (A)</p> Signup and view all the answers

What is the primary purpose of testing for starch in plants?

<p>To validate the occurrence of photosynthesis in the plant (D)</p> Signup and view all the answers

Which level of ecological organization includes all ecosystems on Earth?

<p>Biosphere (C)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (C)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>Sunlight (A)</p> Signup and view all the answers

What is the primary consequence of removing a key species from a food web?

<p>The removal can have cascading effects on the entire ecosystem. (A)</p> Signup and view all the answers

What is the primary advantage of biodiversity in ecosystems?

<p>It enhances the efficiency of energy flow. (C)</p> Signup and view all the answers

What is the primary reason for the decline of a species population in an ecosystem?

<p>A decrease in primary producers. (A)</p> Signup and view all the answers

What is the primary function of the energy pyramid in an ecosystem?

<p>It illustrates the decrease in energy availability at each trophic level. (B)</p> Signup and view all the answers

What is the primary result of climate change on ecosystems?

<p>It decreases the biodiversity of ecosystems. (C)</p> Signup and view all the answers

What is the primary factor that influences population growth in ecosystems?

<p>Both natural and human-induced factors. (C)</p> Signup and view all the answers

What is the primary consequence of a disruption in ecosystem balance?

<p>Significant consequences for all species involved. (D)</p> Signup and view all the answers

What is the primary role of producers in an energy pyramid?

<p>To capture solar energy and produce chemical energy. (C)</p> Signup and view all the answers

What is the primary effect of the loss of primary producers on an ecosystem?

<p>A decrease in secondary consumers. (C)</p> Signup and view all the answers

What is the primary characteristic of an ecosystem?

<p>The balance between different trophic levels and the resources available. (B)</p> Signup and view all the answers

What is the primary reason for the extinction of dinosaurs?

<p>A sudden climate change event (B)</p> Signup and view all the answers

What is the main consequence of habitat destruction on ecosystems?

<p>Reduced ecosystem balance (C)</p> Signup and view all the answers

What is the primary consequence of human activities such as overfishing, deforestation, and pollution on ecosystems?

<p>Disruption of food chains and food webs (D)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To maintain ecosystem balance (B)</p> Signup and view all the answers

What is the primary function of primary consumers in an ecosystem?

<p>To eat producers and occupy the second trophic level (C)</p> Signup and view all the answers

What type of adaptation allows organisms to blend in with their surroundings?

<p>Camouflage (C)</p> Signup and view all the answers

What is the primary reason for the pyramid shape of energy pyramids in ecosystems?

<p>Because energy is lost at each trophic level (B)</p> Signup and view all the answers

What is the term for the process by which organisms change over time to better survive in their environment?

<p>Adaptation (A)</p> Signup and view all the answers

What is the term for the complex network of interconnected food chains within an ecosystem?

<p>Food web (A)</p> Signup and view all the answers

What is the primary benefit of food webs to ecosystems?

<p>They contribute to the stability and resilience of ecosystems (C)</p> Signup and view all the answers

What type of adaptations enhance survival through physical characteristics?

<p>Structural adaptations (C)</p> Signup and view all the answers

What is the primary threat to the Riverine Rabbit population?

<p>Habitat destruction and agricultural expansion (C)</p> Signup and view all the answers

What is the primary role of decomposers in ecosystems?

<p>To break down dead or decaying organisms, recycling nutrients (D)</p> Signup and view all the answers

What is the term for the study of population dynamics, resource availability, and environmental changes?

<p>Ecological monitoring (C)</p> Signup and view all the answers

What is the primary consequence of energy loss at each trophic level?

<p>Decreased energy available to the next trophic level (A)</p> Signup and view all the answers

What is the primary benefit of sustainable practices in agriculture, fishing, and forestry?

<p>Preserved resources for future generations (C)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>The sun (C)</p> Signup and view all the answers

What is the primary role of tertiary consumers in an ecosystem?

<p>To eat secondary consumers and occupy the fourth trophic level (B)</p> Signup and view all the answers

What is the term for the introduction of non-native species that disrupt local ecosystems?

<p>Invasive species (C)</p> Signup and view all the answers

What is the term for the flow of energy from one organism to another in a linear sequence?

<p>Food chain (D)</p> Signup and view all the answers

What is the primary reason for the pyramidal energy structure in ecosystems?

<p>The second law of thermodynamics (B)</p> Signup and view all the answers

What is the main difference between a food chain and a food web?

<p>The linear sequence of a food chain versus the interconnectedness of a food web (D)</p> Signup and view all the answers

Which type of consumer helps control insect populations and can also serve as prey for higher-level carnivores?

<p>Insectivores (A)</p> Signup and view all the answers

What is the role of decomposers in maintaining ecosystem health?

<p>Recycling nutrients back into the ecosystem (C)</p> Signup and view all the answers

What is the result of predator-prey relationships in ecosystems?

<p>Regulation of population sizes and maintenance of ecosystem balance (B)</p> Signup and view all the answers

What is the significance of energy transfer in ecosystems?

<p>It is essential for the transfer of energy within an ecosystem (C)</p> Signup and view all the answers

What is the characteristic of omnivores in food webs?

<p>They have a diverse diet that includes both plants and animals (D)</p> Signup and view all the answers

What is the role of producers in an ecosystem?

<p>To produce organic matter through photosynthesis (A)</p> Signup and view all the answers

What is the significance of nutrient cycling in ecosystems?

<p>It ensures the availability of essential nutrients for producers (C)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>They allow for the transfer of energy and nutrients within an ecosystem (D)</p> Signup and view all the answers

What is the primary function of camouflage in animals?

<p>To blend in with their surroundings to avoid predators (D)</p> Signup and view all the answers

Which of the following is an example of a behavioral adaptation in plants?

<p>The flower timing of the baobab tree to attract nocturnal pollinators (A)</p> Signup and view all the answers

What is the main reason for the decline of the Riverine Rabbit population?

<p>Habitat destruction due to human activities (A)</p> Signup and view all the answers

What is the term for the ability of an organism to change its appearance to resemble another species?

<p>Mimicry (B)</p> Signup and view all the answers

Which of the following is an example of a functional adaptation in plants?

<p>The baobab tree's ability to store water in its trunk (D)</p> Signup and view all the answers

What is the primary way in which human activities impact ecosystems?

<p>All of the above (D)</p> Signup and view all the answers

What is the term for the process by which organisms adapt to changing environments?

<p>Adaptation (C)</p> Signup and view all the answers

Which of the following is an example of a structural adaptation in plants?

<p>The umbrella thorn acacia's deep roots to access groundwater (D)</p> Signup and view all the answers

What is the primary difference between natural and human-induced changes to ecosystems?

<p>Natural changes are temporary, while human-induced changes are permanent (C)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (C)</p> Signup and view all the answers

What is the primary consequence of habitat destruction?

<p>Disruption of ecosystem services (C)</p> Signup and view all the answers

Which of the following is a key benefit of biodiversity?

<p>Enhanced ecosystem stability (A)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To promote sustainable development (D)</p> Signup and view all the answers

What is the result of harming one component of an ecosystem?

<p>A ripple effect on other components (D)</p> Signup and view all the answers

What is the role of environmental organizations in conservation?

<p>To advocate for environmental protection and conduct research (D)</p> Signup and view all the answers

What is the purpose of establishing protected areas?

<p>To conserve habitats and species (B)</p> Signup and view all the answers

What is the impact of alien invasive species on native ecosystems?

<p>They outcompete, prey on, or bring diseases to native species (C)</p> Signup and view all the answers

What is the primary threat to ecosystems from human activities?

<p>Habitat destruction (C)</p> Signup and view all the answers

What is the importance of community involvement in conservation?

<p>It plays a vital role in conservation efforts (B)</p> Signup and view all the answers

What is the result of global warming on ecosystems?

<p>It disrupts habitats and the survival of many species (B)</p> Signup and view all the answers

What is a key strategy for engaging communities in conservation efforts?

<p>Providing education and promoting sustainable livelihoods (C)</p> Signup and view all the answers

What is a primary threat to rhino populations in South Africa?

<p>poaching for their horns (B)</p> Signup and view all the answers

What is a common method for managing invasive species?

<p>biological control using natural predators or pathogens (C)</p> Signup and view all the answers

What is a key benefit of supporting conservation organizations?

<p>contributing to the conservation of biodiversity (D)</p> Signup and view all the answers

Why is public awareness important for conservation efforts?

<p>to educate people about the importance of conservation (B)</p> Signup and view all the answers

What is a key way individuals can contribute to conservation efforts?

<p>reducing their ecological footprint (B)</p> Signup and view all the answers

What type of energy is stored in chemical bonds and available for release in chemical reactions?

<p>Chemical Potential Energy (C)</p> Signup and view all the answers

What is the primary pigment in plants responsible for absorbing light energy for photosynthesis?

<p>Chlorophyll (D)</p> Signup and view all the answers

Where does photosynthesis occur in plant cells?

<p>Chloroplasts (D)</p> Signup and view all the answers

What is the primary function of photosynthesis in sustaining life on Earth?

<p>To convert light energy into chemical energy (C)</p> Signup and view all the answers

What is the relationship between radiant energy and chemical potential energy in photosynthesis?

<p>Radiant energy is converted into chemical potential energy (A)</p> Signup and view all the answers

What is the significance of starch in plant cells?

<p>It is a storage form of glucose (D)</p> Signup and view all the answers

What is the primary difference between soluble and insoluble molecules in plant cells?

<p>Soluble molecules can dissolve in water, while insoluble molecules cannot (C)</p> Signup and view all the answers

What is the relationship between the Sun's energy and the process of photosynthesis?

<p>The Sun's energy is absorbed by chlorophyll and converted into chemical potential energy (C)</p> Signup and view all the answers

What is the primary function of glucose produced during photosynthesis?

<p>To serve as food for the plant (C)</p> Signup and view all the answers

What is the primary focus of population ecology?

<p>To understand how populations grow and what factors influence their growth (A)</p> Signup and view all the answers

Why is starch an ideal substance for long-term storage?

<p>Because it is an insoluble compound (A)</p> Signup and view all the answers

What is an example of a level of ecological organization that includes a community of living organisms and their non-living environment?

<p>Ecosystem (B)</p> Signup and view all the answers

What is the purpose of testing for carbon dioxide in limewater?

<p>To confirm the occurrence of photosynthesis (D)</p> Signup and view all the answers

What is the term for the study of the relationships between organisms and their environments?

<p>Ecology (A)</p> Signup and view all the answers

What is the primary reactant required for respiration to occur?

<p>Glucose (B)</p> Signup and view all the answers

What is an example of a community?

<p>Different populations of organisms that interact in a certain area (D)</p> Signup and view all the answers

What is the role of chlorophyll in the process of photosynthesis?

<p>To absorb light energy from the Sun (C)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (D)</p> Signup and view all the answers

What is the term for the study of interactions between organisms and their environment?

<p>Ecology (A)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecosystem Ecology (A)</p> Signup and view all the answers

What is the primary purpose of respiration?

<p>To release energy from glucose (C)</p> Signup and view all the answers

What is the primary difference between glucose and starch?

<p>Glucose is sweet-tasting, while starch is not (B)</p> Signup and view all the answers

What is the term for the global sum of all ecosystems?

<p>Biosphere (A)</p> Signup and view all the answers

What is the common test used to confirm the presence of starch in plants?

<p>Iodine test (A)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (C)</p> Signup and view all the answers

What is an example of a level of ecological organization that includes all living beings and their interactions with the elements of the lithosphere, hydrosphere, and atmosphere?

<p>Biosphere (D)</p> Signup and view all the answers

What is the relationship between photosynthesis and respiration?

<p>Photosynthesis produces glucose, while respiration releases energy (D)</p> Signup and view all the answers

What is the primary reason for the rapid growth of the zebra population in Kruger National Park?

<p>Favorable environmental conditions leading to increased food availability (A)</p> Signup and view all the answers

What is the term for all the populations of different species that live and interact in a particular area?

<p>Community (C)</p> Signup and view all the answers

Which of the following is NOT an example of an abiotic component in an ecosystem?

<p>Microorganisms (C)</p> Signup and view all the answers

What is the primary function of glucose in the ecosystem?

<p>Providing energy for respiration in plants and animals (C)</p> Signup and view all the answers

What type of interaction occurs between hyenas and vultures in a ecosystem?

<p>Competition (C)</p> Signup and view all the answers

Which of the following is an example of a biotic component in an ecosystem?

<p>Plants (C)</p> Signup and view all the answers

What is the term for the interaction between individuals of different species within a community?

<p>Symbiosis (D)</p> Signup and view all the answers

Which of the following is an example of parasitism?

<p>Remora fish and sharks (D)</p> Signup and view all the answers

What is the primary function of oxygen in the ecosystem?

<p>Supporting the respiration process (A)</p> Signup and view all the answers

What type of interaction occurs between bees and flowers in an ecosystem?

<p>Mutualism (B)</p> Signup and view all the answers

Which of the following is NOT a characteristic of an ecosystem?

<p>Isolation from other ecosystems (D)</p> Signup and view all the answers

What is the primary characteristic that distinguishes biotic from abiotic components in an ecosystem?

<p>Interactions with other living organisms (A)</p> Signup and view all the answers

What is the primary role of decomposers in ecosystems?

<p>To break down dead or decaying organisms, recycling nutrients (A)</p> Signup and view all the answers

What is the primary source of energy for consumers in an ecosystem?

<p>Producers (A)</p> Signup and view all the answers

What is the term for the study of energy flow and nutrient cycling in ecosystems?

<p>Trophic ecology (C)</p> Signup and view all the answers

What is the primary role of predators in maintaining ecological balance?

<p>To regulate prey population sizes (D)</p> Signup and view all the answers

What is the term for a food chain that involves multiple organisms and energy flow?

<p>Food web (B)</p> Signup and view all the answers

What is the primary characteristic of herbivores in an ecosystem?

<p>They primarily eat plants (B)</p> Signup and view all the answers

What is the term for the pathways through which energy and nutrients flow within an ecosystem?

<p>Trophic interactions (B)</p> Signup and view all the answers

What is the primary role of producers in an ecosystem?

<p>To produce their own food through photosynthesis (B)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels?

<p>Energy is lost as heat (D)</p> Signup and view all the answers

Which adaptation allows birds to protect their young from predators?

<p>Behavioral Adaptations (B)</p> Signup and view all the answers

What is the primary function of the umbrella-shaped canopy of the Umbrella Thorn Acacia tree?

<p>To maximize light exposure (D)</p> Signup and view all the answers

Which human-induced factor is responsible for the destruction of habitats?

<p>Habitat Destruction (D)</p> Signup and view all the answers

What is the purpose of the Baobab tree's ability to store water in its trunk?

<p>To endure long dry periods (A)</p> Signup and view all the answers

Which adaptation allows the chameleon to blend in with its surroundings?

<p>Camouflage (D)</p> Signup and view all the answers

What is the primary function of the Baobab tree's flowers emitting a rotting meat odor?

<p>To attract pollinators (B)</p> Signup and view all the answers

Which adaptation allows the king snake to avoid predators?

<p>Mimicry (C)</p> Signup and view all the answers

What is the primary function of hibernation in bears?

<p>To conserve energy (D)</p> Signup and view all the answers

Which factor contributes to the permanent alterations in habitats?

<p>Long-term changes such as climate change (C)</p> Signup and view all the answers

Which adaptation allows the wildebeest to survive in the African savanna?

<p>Migration (D)</p> Signup and view all the answers

What is the primary consequence of removing a key species from a food web?

<p>A decrease in biodiversity and ecosystem stability (D)</p> Signup and view all the answers

What is the primary function of biodiversity in ecosystems?

<p>To enhance the efficiency of energy flow and reduce fluctuations (D)</p> Signup and view all the answers

What is the term for the maximum capacity of resources in an ecosystem to support the organisms living there?

<p>Limit (B)</p> Signup and view all the answers

What is the primary consequence of a decline in primary producers in an ecosystem?

<p>A decrease in the population of secondary and tertiary consumers (C)</p> Signup and view all the answers

What is the term for the balance between different trophic levels and the resources available in an ecosystem?

<p>Ecosystem balance (B)</p> Signup and view all the answers

What is the primary factor that influences the population growth dynamics of a species in an ecosystem?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary consequence of climate change on ecosystems?

<p>A long-term alteration of habitats, making them unsuitable for certain species (C)</p> Signup and view all the answers

What is the term for the interconnected nature of feeding relationships in an ecosystem?

<p>Food web (D)</p> Signup and view all the answers

What is the primary characteristic of an ecosystem that maintains its balance?

<p>The flexibility to adjust to changes in population sizes (B)</p> Signup and view all the answers

What is the primary consequence of the loss of primary producers in an ecosystem?

<p>A decline in the population of secondary and tertiary consumers (D)</p> Signup and view all the answers

What is the primary consequence of significant energy loss at each trophic level in a food chain?

<p>Unstable food webs (B)</p> Signup and view all the answers

Which of the following is a characteristic of a food web?

<p>Multiple interconnected food chains (C)</p> Signup and view all the answers

What is the primary role of primary consumers in an ecosystem?

<p>Consuming producers and occupying the second trophic level (B)</p> Signup and view all the answers

What is the result of human activities such as overfishing, deforestation, and pollution on ecosystems?

<p>Disrupted food chains and food webs, leading to declines in biodiversity and ecosystem health (D)</p> Signup and view all the answers

What is the term for the graphical representation of the energy available at each trophic level in an ecosystem?

<p>Energy Pyramid (C)</p> Signup and view all the answers

What is the primary reason for the demise of dinosaurs?

<p>A sudden climate change event (B)</p> Signup and view all the answers

What is the primary source of energy for producers in an ecosystem?

<p>Capturing sunlight through photosynthesis (B)</p> Signup and view all the answers

Which of the following human activities can lead to habitat destruction?

<p>Deforestation and urbanization (B)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To maintain ecosystem balance and prevent extinction (B)</p> Signup and view all the answers

What is the term for the organisms that eat secondary consumers in a food chain?

<p>Tertiary Consumers (B)</p> Signup and view all the answers

What is the importance of energy flow in ecosystems?

<p>It maintains ecosystem balance and supports all life processes (A)</p> Signup and view all the answers

What is the term for the process by which organisms change over time to better survive in their environment?

<p>Adaptation (C)</p> Signup and view all the answers

What is the primary role of decomposers in ecosystems?

<p>Breaking down dead organisms and recycling nutrients (A)</p> Signup and view all the answers

What type of adaptation aids in running and hunting in some animals?

<p>Structural adaptation (D)</p> Signup and view all the answers

What is the term for the process of energy transfer from one trophic level to the next in an ecosystem?

<p>Energy Flow (A)</p> Signup and view all the answers

What is the term for the physical characteristics of organisms that enhance survival?

<p>Structural adaptation (D)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Population dynamics (C)</p> Signup and view all the answers

What is the primary role of ecologists in maintaining ecosystem balance?

<p>To monitor ecosystems and detect imbalances early (D)</p> Signup and view all the answers

What is the primary goal of establishing protected areas?

<p>To conserve habitats and provide safe havens for endangered species (C)</p> Signup and view all the answers

What is the primary role of pollution control measures in ecosystems?

<p>To reduce pollution and protect ecosystems from harmful substances (A)</p> Signup and view all the answers

What is the primary mechanism by which decomposers contribute to the nutrient cycle in ecosystems?

<p>By breaking down dead or decaying organic matter (A)</p> Signup and view all the answers

What is the primary consequence of energy loss as it moves up trophic levels in a food chain?

<p>A decrease in the energy available to higher-level consumers (C)</p> Signup and view all the answers

Which of the following consumer types can occupy multiple trophic levels in a food web?

<p>Omnivores (B)</p> Signup and view all the answers

What is the primary function of predators in regulating ecosystem balance?

<p>To control the populations of primary consumers (B)</p> Signup and view all the answers

Which of the following is a characteristic of apex predators in a food chain?

<p>They have no natural predators (D)</p> Signup and view all the answers

What is the primary role of herbivores in a food chain?

<p>To consume primary producers (D)</p> Signup and view all the answers

Which of the following is a consequence of a lack of decomposers in an ecosystem?

<p>A buildup of dead or decaying organic matter (A)</p> Signup and view all the answers

What is the primary reason for habitat destruction?

<p>Deforestation for timber, agriculture, or urban development (C)</p> Signup and view all the answers

What is the primary difference between food chains and food webs?

<p>Food chains illustrate the interconnectedness of various food chains (B)</p> Signup and view all the answers

What is the primary consequence of alien invasive species in ecosystems?

<p>Outcompetition of native species (C)</p> Signup and view all the answers

Which of the following consumer types primarily feeds on insects?

<p>Insectivores (B)</p> Signup and view all the answers

What is the primary role of primary consumers in a food chain?

<p>To consume primary producers (D)</p> Signup and view all the answers

What is the primary benefit of biodiversity in ecosystems?

<p>Enhanced ecosystem stability (D)</p> Signup and view all the answers

What is the primary role of environmental organizations in conservation efforts?

<p>Conducting research and advocating for environmental protection (A)</p> Signup and view all the answers

What is the primary consequence of pollution on ecosystems?

<p>Disruption of ecosystem services (C)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To maintain ecosystem health and biodiversity (D)</p> Signup and view all the answers

What is the primary effect of habitat destruction on ecosystems?

<p>Reduced biodiversity (C)</p> Signup and view all the answers

What is the primary role of protected areas in conservation efforts?

<p>To conserve habitats and species (A)</p> Signup and view all the answers

What is the primary consequence of hunting and poaching on ecosystems?

<p>Disruption of ecological balance (C)</p> Signup and view all the answers

What is the primary importance of community involvement in conservation efforts?

<p>To play a vital role in conservation efforts (C)</p> Signup and view all the answers

What is a crucial aspect of engaging communities in conservation efforts?

<p>Raising public awareness about the importance of conservation (D)</p> Signup and view all the answers

What is a key threat faced by rhinos in South Africa?

<p>Poaching for their horns (C)</p> Signup and view all the answers

What is a common approach used in invasive species management?

<p>Biological control using natural predators or pathogens (C)</p> Signup and view all the answers

What can individuals do to contribute to conservation efforts?

<p>Reducing their ecological footprint, supporting conservation organizations, and participating in local conservation activities (B)</p> Signup and view all the answers

What is a benefit of raising public awareness about rhino conservation?

<p>Reduced poaching activities (C)</p> Signup and view all the answers

What is an effective way to manage invasive species in aquatic ecosystems?

<p>Mechanical removal of invasive species (C)</p> Signup and view all the answers

What is the primary source of energy for life on Earth?

<p>Radiant energy from the Sun (C)</p> Signup and view all the answers

What is the green pigment responsible for absorbing light energy in photosynthesis?

<p>Chlorophyll (C)</p> Signup and view all the answers

What is the process by which plants convert light energy into chemical energy?

<p>Photosynthesis (C)</p> Signup and view all the answers

Where does photosynthesis occur in plant cells?

<p>Chloroplasts (B)</p> Signup and view all the answers

What is the storage form of glucose in plants?

<p>Starch (A)</p> Signup and view all the answers

What type of energy is stored in chemical bonds?

<p>Chemical potential energy (B)</p> Signup and view all the answers

What is the type of energy that plants use for their biological processes?

<p>Chemical potential energy (D)</p> Signup and view all the answers

What is the term for the process by which organisms release energy from food?

<p>Respiration (C)</p> Signup and view all the answers

What is the term for the complex network comprising living organisms and their non-living environment?

<p>Ecosystem (B)</p> Signup and view all the answers

Which type of interaction occurs when two or more species vie for the same limited resource?

<p>Competition (D)</p> Signup and view all the answers

What is the level of ecological organization that consists of a group of organisms of the same species living in the same area at the same time?

<p>Population (B)</p> Signup and view all the answers

What is the term for the study of populations in relation to their environment?

<p>Population Ecology (C)</p> Signup and view all the answers

What is the process by which plants break down glucose molecules to release energy for cellular processes?

<p>Respiration (C)</p> Signup and view all the answers

What is the term for the long-term interaction between individuals of different species within a community?

<p>Symbiosis (D)</p> Signup and view all the answers

What is the term for a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding?

<p>Species (A)</p> Signup and view all the answers

What is the by-product of photosynthesis that is essential for the respiration of most living organisms?

<p>Oxygen (B)</p> Signup and view all the answers

What is the level of ecological organization that includes a community of living organisms and their non-living environment?

<p>Ecosystem (B)</p> Signup and view all the answers

What is the term for the non-living physical and chemical elements of an ecosystem?

<p>Abiotic (B)</p> Signup and view all the answers

What is the term for the interactions between organisms and their environment?

<p>Interaction (A)</p> Signup and view all the answers

Which type of symbiotic relationship involves one organism benefiting at the expense of the other?

<p>Parasitism (A)</p> Signup and view all the answers

What is the term for all the populations of different species that live and interact in a particular area?

<p>Community (D)</p> Signup and view all the answers

What is the term for the study of the interactions between biotic and abiotic components in an ecosystem?

<p>Ecology (A)</p> Signup and view all the answers

What is the term for the global ecological system integrating all living beings and their relationships?

<p>Biosphere (A)</p> Signup and view all the answers

What is the term for a scientist who studies the relationships between organisms and their environments?

<p>Ecologist (B)</p> Signup and view all the answers

What is the term for the natural environment where an organism resides?

<p>Habitat (C)</p> Signup and view all the answers

What is the branch of biology that deals with the relations of organisms to one another and to their physical surroundings?

<p>Ecology (B)</p> Signup and view all the answers

What is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

<p>Photosynthesis (C)</p> Signup and view all the answers

What is the term for the act of two or more organisms having an effect on each other or their environment?

<p>Interaction (A)</p> Signup and view all the answers

What is produced during photosynthesis to serve as food for the plant?

<p>Glucose (C)</p> Signup and view all the answers

What is the process by which cells break down glucose to release energy, water, and carbon dioxide?

<p>Respiration (A)</p> Signup and view all the answers

What is the purpose of using iodine to test for photosynthesis?

<p>To test for the presence of starch (B)</p> Signup and view all the answers

What is the by-product of respiration that must be efficiently removed from the organism?

<p>Carbon dioxide (A)</p> Signup and view all the answers

What is the scientific study of how living organisms interact with each other and their environment?

<p>Ecology (A)</p> Signup and view all the answers

What is the primary reactant for respiration?

<p>Glucose (D)</p> Signup and view all the answers

What is the property of glucose that makes it ideal for immediate use by the plant?

<p>Soluble in water (D)</p> Signup and view all the answers

What is the term for the process of releasing energy from food, which is then used to drive essential processes?

<p>Respiration (C)</p> Signup and view all the answers

What is the purpose of limewater in testing for carbon dioxide?

<p>To test for the presence of carbon dioxide (D)</p> Signup and view all the answers

What is the primary role of glucose in the plant?

<p>To provide energy for growth and maintenance (B)</p> Signup and view all the answers

What is the role of omnivores in food webs?

<p>They play a flexible role in food webs. (B)</p> Signup and view all the answers

What is the primary function of decomposers in ecosystems?

<p>To break down dead or decaying matter and recycle nutrients. (C)</p> Signup and view all the answers

What is the primary function of predators in an ecosystem?

<p>To control the population size of their prey (C)</p> Signup and view all the answers

What is a characteristic of a food web?

<p>It shows the interconnectedness of different food chains. (A)</p> Signup and view all the answers

What is the characteristic of a pond ecosystem?

<p>It has both biotic and abiotic components (B)</p> Signup and view all the answers

What is the term for the basis of understanding ecological dynamics and sustainability?

<p>Feeding relationships (A)</p> Signup and view all the answers

What is the result of energy loss as it moves up trophic levels in a food web?

<p>Energy decreases following the second law of thermodynamics. (A)</p> Signup and view all the answers

What is the role of insectivores in ecosystems?

<p>They help control insect populations and serve as prey for other carnivores. (D)</p> Signup and view all the answers

What is the role of aquatic plants in a pond ecosystem?

<p>To produce oxygen through photosynthesis (A)</p> Signup and view all the answers

What is the term for an organism that cannot produce its own food?

<p>Consumer (B)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>They are essential for the transfer of energy and nutrients within an ecosystem. (B)</p> Signup and view all the answers

What is the role of carnivores in food webs?

<p>They can be secondary or tertiary consumers that feed on other animals. (D)</p> Signup and view all the answers

What is the result of the interaction between biotic and abiotic components in an ecosystem?

<p>The ecosystem maintains ecological balance (D)</p> Signup and view all the answers

What is the term for the process by which producers convert sunlight into chemical energy?

<p>Photosynthesis (C)</p> Signup and view all the answers

What is an example of a food chain?

<p>Grass → Grasshopper → Frog → Snake → Hawk (D)</p> Signup and view all the answers

What is the characteristic of a carnivore?

<p>It eats only animals (C)</p> Signup and view all the answers

What is the term for the process of nutrient cycling in ecosystems?

<p>Nutrient cycling (B)</p> Signup and view all the answers

What is the role of herbivores in ecosystems?

<p>They transfer energy from producers to higher trophic levels. (A)</p> Signup and view all the answers

What is the term for the level of ecological organization that includes a community of living organisms and their non-living environment?

<p>Ecosystem (C)</p> Signup and view all the answers

What is the importance of feeding relationships in ecosystems?

<p>They illustrate how organisms obtain energy and nutrients (C)</p> Signup and view all the answers

What is the main cause of the extinction of dinosaurs?

<p>Sudden climate change (A)</p> Signup and view all the answers

What is the main effect of habitat destruction on ecosystems?

<p>Disrupted ecosystem balance (D)</p> Signup and view all the answers

What is the main purpose of conservation efforts?

<p>To preserve ecosystem balance (C)</p> Signup and view all the answers

What is an adaptation?

<p>A change in an organism to survive in its environment (B)</p> Signup and view all the answers

What is the main difference between structural and functional adaptations?

<p>One is physiological, the other is physical (B)</p> Signup and view all the answers

What is the main goal of ecological monitoring?

<p>To detect imbalances in ecosystems (C)</p> Signup and view all the answers

What is the Riverine Rabbit an example of?

<p>A species that is critically endangered (B)</p> Signup and view all the answers

What is the main effect of invasive species on ecosystems?

<p>Disrupted ecosystem balance (C)</p> Signup and view all the answers

What is the main purpose of protected areas?

<p>To provide safe havens for endangered species (D)</p> Signup and view all the answers

What is the main goal of sustainable practices?

<p>To reduce the impact on ecosystems (B)</p> Signup and view all the answers

What is the primary function of decomposers in an ecosystem?

<p>To break down dead or decaying organisms, recycling nutrients (A)</p> Signup and view all the answers

What is the main consequence of human activities on feeding relationships in ecosystems?

<p>Disruption of food chains and food webs, leading to declines in biodiversity and ecosystem health (B)</p> Signup and view all the answers

What is the source of energy for all life processes in an ecosystem?

<p>The sun (C)</p> Signup and view all the answers

What is the term for the flow of energy from one organism to another in a linear sequence?

<p>Food chain (B)</p> Signup and view all the answers

What happens to energy as it moves up trophic levels in an ecosystem?

<p>It is lost at each stage (A)</p> Signup and view all the answers

What is the term for a graphical representation of the energy available at each trophic level in an ecosystem?

<p>Energy pyramid (A)</p> Signup and view all the answers

What is the term for an organism that eats producers (plants)?

<p>Primary consumer (B)</p> Signup and view all the answers

What is the term for the complex network of interconnected food chains within an ecosystem?

<p>Food web (B)</p> Signup and view all the answers

Why is it important to understand feeding relationships in ecosystems?

<p>To comprehend ecosystem dynamics and maintain ecological balance (C)</p> Signup and view all the answers

What is the term for the process by which plants, algae, and certain bacteria capture sunlight and convert it into chemical energy?

<p>Photosynthesis (D)</p> Signup and view all the answers

What is the main purpose of camouflage in animals?

<p>To blend in with their surroundings to avoid predators (D)</p> Signup and view all the answers

Which adaptation helps the baobab tree to survive in arid regions?

<p>Deep roots to access groundwater (A)</p> Signup and view all the answers

What is the main reason for the decline of the Riverine Rabbit population?

<p>Habitat destruction due to human activities (C)</p> Signup and view all the answers

What is an example of a behavioral adaptation in plants?

<p>Flower timing to attract pollinators (C)</p> Signup and view all the answers

Which of the following is an example of a natural disaster that can disrupt ecosystems?

<p>Floods (C)</p> Signup and view all the answers

What is the main difference between migration and hibernation?

<p>Migration is a long-term movement, while hibernation is a short-term rest (D)</p> Signup and view all the answers

What is the main purpose of mimicry in animals?

<p>To resemble another species for protection or other advantages (A)</p> Signup and view all the answers

Which of the following is an example of a human-induced change to the environment?

<p>Deforestation (C)</p> Signup and view all the answers

What happens to the population of a species if one of its resources is removed from the ecosystem?

<p>The population declines (D)</p> Signup and view all the answers

What is the main purpose of adaptations in animals and plants?

<p>To improve survival in their specific environments (A)</p> Signup and view all the answers

What is the primary consequence of removing a key species from a food web?

<p>Cascading effects on the entire ecosystem (D)</p> Signup and view all the answers

What is the term for the study of the relationships between organisms and their environments?

<p>Ecology (B)</p> Signup and view all the answers

What is the primary role of biodiversity in ecosystems?

<p>To enhance the efficiency of energy flow (A)</p> Signup and view all the answers

What is the term for the maximum capacity of resources in an ecosystem to support the organisms living there?

<p>Limit (D)</p> Signup and view all the answers

What is the primary consequence of climate change on ecosystems?

<p>It alters habitats, making them unsuitable for certain species (A)</p> Signup and view all the answers

What is the primary role of apex predators in an ecosystem?

<p>To maintain ecosystem balance (D)</p> Signup and view all the answers

What is the primary consequence of a decline in primary producers on an ecosystem?

<p>It leads to a decline in primary consumers (A)</p> Signup and view all the answers

What is the term for the movement of energy from one trophic level to the next?

<p>Energy flow (D)</p> Signup and view all the answers

What is the primary role of herbivores in an ecosystem?

<p>To consume primary producers (D)</p> Signup and view all the answers

What is the term for the balance between different trophic levels and the resources available in an ecosystem?

<p>Ecosystem balance (A)</p> Signup and view all the answers

What is a major threat to rhinos in South Africa?

<p>Poaching for their horns (A)</p> Signup and view all the answers

What is a conservation strategy used to protect rhinos in South Africa?

<p>Translocation of rhinos to safer areas (A)</p> Signup and view all the answers

What is a common method used to manage invasive species?

<p>Biological control (A)</p> Signup and view all the answers

What is an impact of invasive species on ecosystems?

<p>Outcompetition of native plants (D)</p> Signup and view all the answers

What is a way individuals can contribute to conservation efforts?

<p>Reducing their ecological footprint (A)</p> Signup and view all the answers

What is a key component of successful conservation outcomes?

<p>Community engagement (C)</p> Signup and view all the answers

What is the primary goal of conservation efforts?

<p>To protect and preserve the natural environment (C)</p> Signup and view all the answers

What is a key threat to ecosystems?

<p>Habitat destruction (D)</p> Signup and view all the answers

What is the importance of biodiversity in ecosystems?

<p>It contributes to the resilience and stability of ecosystems (A)</p> Signup and view all the answers

What is the role of environmental organizations in conservation efforts?

<p>They advocate for environmental protection (C)</p> Signup and view all the answers

What is the result of the loss of a predator in an ecosystem?

<p>An increase in population of prey species (C)</p> Signup and view all the answers

What is the purpose of establishing protected areas?

<p>To provide safe havens for wildlife (B)</p> Signup and view all the answers

What is the importance of sustainable development in conservation efforts?

<p>It ensures that natural resources are available for future generations (C)</p> Signup and view all the answers

What is the role of local communities in conservation efforts?

<p>They play a vital role in conservation efforts (D)</p> Signup and view all the answers

What is a consequence of global warming?

<p>A disruption in habitats and the survival of many species (D)</p> Signup and view all the answers

What is the importance of interconnectedness of ecosystems in conservation efforts?

<p>Harming one component of an ecosystem can have cascading effects on other components (B)</p> Signup and view all the answers

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