Podcast
Questions and Answers
The branch of biology dealing with the interactions among organisms and environment is called?
The branch of biology dealing with the interactions among organisms and environment is called?
Ecology
Which of the following descriptions about the organization of an ecosystem is correct?
Which of the following descriptions about the organization of an ecosystem is correct?
The simplest grouping of more than one kind of organism in the biosphere is?
The simplest grouping of more than one kind of organism in the biosphere is?
A community
The lowest level of environmental complexity that includes living and nonliving factors is the?
The lowest level of environmental complexity that includes living and nonliving factors is the?
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Which of the following is NOT a basic method used by ecologists to study the living world?
Which of the following is NOT a basic method used by ecologists to study the living world?
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Which ecological inquiry method is an ecologist using when entering an area periodically to count the population numbers of a certain species?
Which ecological inquiry method is an ecologist using when entering an area periodically to count the population numbers of a certain species?
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Plants are?
Plants are?
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The algae at the beginning of the food chain are?
The algae at the beginning of the food chain are?
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How do mostly primary producers make their own food?
How do mostly primary producers make their own food?
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Which of the following organisms does NOT require sunlight to live?
Which of the following organisms does NOT require sunlight to live?
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In which way are plants in a sunny mountain meadow and sulfur bacteria in a deep-sea volcanic vent alike?
In which way are plants in a sunny mountain meadow and sulfur bacteria in a deep-sea volcanic vent alike?
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All the interconnected feeding relationships in an ecosystem make up a food?
All the interconnected feeding relationships in an ecosystem make up a food?
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The total amount of living tissue within a given trophic level is called the?
The total amount of living tissue within a given trophic level is called the?
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What is an ecological model of the relationships that form a network of complex feeding interactions among organisms in a community from producers to decomposers?
What is an ecological model of the relationships that form a network of complex feeding interactions among organisms in a community from producers to decomposers?
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What animals eat both producers and consumers?
What animals eat both producers and consumers?
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What is the term for each step in the transfer of energy and matter within a food web?
What is the term for each step in the transfer of energy and matter within a food web?
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A bird stalks, kills then eats an insect based on its behavior. Which pair of ecological terms describes the bird?
A bird stalks, kills then eats an insect based on its behavior. Which pair of ecological terms describes the bird?
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What goes in box 5 of the food web?
What goes in box 5 of the food web?
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What are 3 kinds of ecological pyramids?
What are 3 kinds of ecological pyramids?
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Only 10% of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism's life processes and the rest is?
Only 10% of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism's life processes and the rest is?
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A word that means the same thing as consumer is?
A word that means the same thing as consumer is?
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Matter can recycle through the biosphere because?
Matter can recycle through the biosphere because?
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The repeated movement of water between Earth's surface and the atmosphere is called?
The repeated movement of water between Earth's surface and the atmosphere is called?
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What is happening to water at D in the water cycle?
What is happening to water at D in the water cycle?
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What part of the water cycle shows transpiration?
What part of the water cycle shows transpiration?
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Carbon cycles through the biosphere in all of the following processes except?
Carbon cycles through the biosphere in all of the following processes except?
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Which part of the water cycle is the biological process?
Which part of the water cycle is the biological process?
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Nitrogen fixation is carried out primarily by?
Nitrogen fixation is carried out primarily by?
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Which of the following has a direct role in the nitrogen cycle?
Which of the following has a direct role in the nitrogen cycle?
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Organisms need nutrients in order to?
Organisms need nutrients in order to?
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The movement of energy in nutrients through living systems are different because?
The movement of energy in nutrients through living systems are different because?
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Biochemical cycling ensures that?
Biochemical cycling ensures that?
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Animals that get energy by eating the carcasses of other animals that have been killed by predators or have died of natural causes are called?
Animals that get energy by eating the carcasses of other animals that have been killed by predators or have died of natural causes are called?
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Phosphorus is very important for living things because living organisms need phosphorus?
Phosphorus is very important for living things because living organisms need phosphorus?
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Each of the following is a non-living abiotic factor in the environment except?
Each of the following is a non-living abiotic factor in the environment except?
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Which is a biotic factor that affects the size of a population in a specific ecosystem?
Which is a biotic factor that affects the size of a population in a specific ecosystem?
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During a long period when there is no rainfall, a mountain may temporarily leave its usual hunting territory to drink from a farm pond. This behavior is due to?
During a long period when there is no rainfall, a mountain may temporarily leave its usual hunting territory to drink from a farm pond. This behavior is due to?
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Which is an example of how biotic and abiotic factors interact?
Which is an example of how biotic and abiotic factors interact?
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What is at the base of all ecological pyramids?
What is at the base of all ecological pyramids?
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Which of the following is a food chain in the food web?
Which of the following is a food chain in the food web?
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Study Notes
Ecology and Ecosystems
- Ecology studies interactions among organisms and their environment.
- Ecosystems consist of living (biotic) and nonliving (abiotic) factors.
- Communities are formed by populations of different species.
- The simplest grouping in the biosphere is a community.
Ecological Research Methods
- Common methods for ecologists exclude animal training.
- Observational methods help count species populations in a defined area.
Primary Producers
- Plants and algae are primary producers, responsible for making their own food.
- They utilize light energy to produce carbohydrates through photosynthesis.
- Chemosynthetic bacteria can live without sunlight, producing energy from chemical reactions.
Food Chains and Food Webs
- Food webs comprise all interconnected feeding relationships in an ecosystem.
- The total amount of living tissue at a trophic level is called biomass.
- Trophic levels represent each step in energy transfer through a food web.
Consumer Interactions
- Omnivores feed on both producers and consumers.
- A bird that consumes insects is labeled as a carnivore and consumer.
- Heterotroph is another term for consumers.
Energy Transfer and Nutrient Cycling
- Only 10% of energy is transferred between trophic levels; the rest is used or lost as heat.
- Biological systems recycle matter; they transform rather than deplete it.
- The water cycle involves the movement of water between Earth’s surface and the atmosphere.
Biogeochemical Cycles
- Processes like transpiration play vital roles in the water cycle.
- Nitrogen fixation, primarily carried out by bacteria, is essential for the nitrogen cycle.
- Nutrients are vital for organisms to perform essential life processes.
Ecological Pyramids
- At the base of ecological pyramids are the producers, followed by various consumer levels.
- Examples of ecological pyramids include those representing energy, biomass, and numbers of organisms.
Biotic and Abiotic Factors
- Biotic factors, such as predator populations, can influence ecosystem dynamics.
- Abiotic factors, like rainfall, also affect animal behaviors and population sizes.
- Interactions occur when biotic and abiotic factors influence one another.
Importance of Nutrients
- Phosphorus is critical for DNA and RNA formation in living organisms.
- Animals that consume dead bodies of other animals are known as scavengers.
Summary of Ecological Concepts
- Energy flows in one direction in ecosystems, while nutrients are recycled.
- Understanding the complex relationships in ecosystems is vital for ecological balance.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on essential concepts in Ecology with these flashcards from Chapter 3 of Biology. This quiz covers interactions among organisms, ecosystems, and community organization. Challenge yourself and enhance your understanding of biological principles.
