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Questions and Answers
What is the basic unit of ecology?
What is the basic unit of ecology?
- Organism (correct)
- Individual
- Biome
- Ecosystem
Which of the following is a biotic component of an ecosystem?
Which of the following is a biotic component of an ecosystem?
- Bacteria (correct)
- Water
- Sunlight
- Soil
The process by which organisms change over time is known as:
The process by which organisms change over time is known as:
- Evolution (correct)
- Adaptation
- Succession
- Symbiosis
A food chain represents the flow of energy from:
A food chain represents the flow of energy from:
The primary producers in an ecosystem are:
The primary producers in an ecosystem are:
The symbiotic relationship between a fungus and a plant root is called:
The symbiotic relationship between a fungus and a plant root is called:
Which of the following is a terrestrial ecosystem?
Which of the following is a terrestrial ecosystem?
The process of ecological succession begins with:
The process of ecological succession begins with:
The term 'niche' refers to:
The term 'niche' refers to:
Which of the following is a major factor that influences the distribution of organisms on Earth?
Which of the following is a major factor that influences the distribution of organisms on Earth?
What is the primary source of energy for most ecosystems on Earth?
What is the primary source of energy for most ecosystems on Earth?
The process by which organisms adapt to their environment over time is known as:
The process by which organisms adapt to their environment over time is known as:
A food chain represents the flow of energy through an ecosystem. Which organisms are at the bottom of a food chain?
A food chain represents the flow of energy through an ecosystem. Which organisms are at the bottom of a food chain?
The interaction between two species where one benefits while the other is neither harmed nor benefited is called:
The interaction between two species where one benefits while the other is neither harmed nor benefited is called:
The total number of different species in a given area is referred to as:
The total number of different species in a given area is referred to as:
Which of the following is a biotic factor in an ecosystem?
Which of the following is a biotic factor in an ecosystem?
The ecological role of an organism within a community is known as its:
The ecological role of an organism within a community is known as its:
The gradual change in a community over time, often leading to a climax community, is known as:
The gradual change in a community over time, often leading to a climax community, is known as:
The process of converting sunlight into chemical energy by plants is called:
The process of converting sunlight into chemical energy by plants is called:
The maximum number of individuals an ecosystem can support is known as its:
The maximum number of individuals an ecosystem can support is known as its:
Which of the following is a potential consequence of habitat fragmentation?
Which of the following is a potential consequence of habitat fragmentation?
Analyze the impact of climate change on coral reefs. Which of the following is a likely consequence?
Analyze the impact of climate change on coral reefs. Which of the following is a likely consequence?
Evaluate the effectiveness of protected areas in conserving biodiversity. Which of the following factors might limit their success?
Evaluate the effectiveness of protected areas in conserving biodiversity. Which of the following factors might limit their success?
Analyze the role of keystone species in an ecosystem. Which of the following best describes their importance?
Analyze the role of keystone species in an ecosystem. Which of the following best describes their importance?
Evaluate the impact of pollution on aquatic ecosystems. Which of the following is a potential consequence?
Evaluate the impact of pollution on aquatic ecosystems. Which of the following is a potential consequence?
Analyze the relationship between biodiversity and ecosystem stability. Which of the following is a likely correlation?
Analyze the relationship between biodiversity and ecosystem stability. Which of the following is a likely correlation?
Evaluate the effectiveness of sustainable agriculture practices in protecting ecosystems. Which of the following is a potential benefit?
Evaluate the effectiveness of sustainable agriculture practices in protecting ecosystems. Which of the following is a potential benefit?
Analyze the impact of invasive species on native ecosystems. Which of the following is a potential consequence?
Analyze the impact of invasive species on native ecosystems. Which of the following is a potential consequence?
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Study Notes
Ecology Fundamentals
- Basic Unit of Ecology: Organism is the smallest unit, critical for understanding ecological interactions.
- Biotic Components: Includes living organisms like bacteria, while abiotic components include sunlight, water, and soil.
Ecological Processes
- Evolution: The process where organisms change over time, leading to adaptations within species.
- Ecological Succession: The gradual process of change in species structure in a community, starting with pioneer species.
Energy Flow in Ecosystems
- Food Chains: Represent energy flow from producers (typically plants) to consumers and decomposers. Energy flows from producers to consumers.
- Primary Producers: Mainly plants, which convert sunlight into energy via photosynthesis.
Symbiotic Relationships
- Fungus and Plant Roots: The symbiotic relationship known as mutualism benefits both organisms.
- Types of Interactions: Commensalism involves one organism benefiting while the other is unaffected; parasitism harms one while benefiting another.
Ecosystem Dynamics
- Niche Concept: Refers to the role of an organism within its ecosystem, involving its interactions with biotic and abiotic factors.
- Biodiversity: Represents the total number of different species in an area and is crucial for ecosystem health.
Environmental Influences
- Factors Influencing Distribution: Climate, soil, and topography collectively impact where organisms are found.
- Habitat Fragmentation: Can lead to decreased genetic diversity among species, negatively affecting population resilience.
Coral Reefs and Climate Change
- Coral Bleaching: A likely consequence of climate change, indicating stress in coral reef ecosystems due to rising temperatures.
Protected Areas and Biodiversity
- Challenges in Conservation: Habitat fragmentation and inadequate funding can limit the success of protected areas in preserving biodiversity.
Keystone Species
- Role of Keystone Species: They are crucial for maintaining the structure and function of their ecosystem, significantly impacting overall balance.
Pollution and Aquatic Ecosystems
- Consequences of Pollution: Can lead to decreased fish populations and has detrimental effects on aquatic biodiversity.
Biodiversity and Stability
- Biodiversity vs. Ecosystem Stability: Higher biodiversity generally contributes to greater ecosystem stability and resilience against disturbances.
Sustainable Agriculture
- Benefits of Sustainable Practices: Reduces water pollution and enhances biodiversity while mitigating issues such as soil erosion.
Invasive Species
- Impact of Invasive Species: They can outcompete native species, leading to ecological imbalances and decreased biodiversity.
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