Biodiversity - AP Biology
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What is a primary consumer?
What is a primary consumer?
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An organism that feeds on primary producers. Herbivores that form the second trophic level.
An organism that feeds on primary producers. Herbivores that form the second trophic level.
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Name one effect of climate change on biodiversity.
Name one effect of climate change on biodiversity.
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Altered species distribution. Temperature changes force species migration or adaptation.
Altered species distribution. Temperature changes force species migration or adaptation.
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What is the significance of genetic variation?
What is the significance of genetic variation?
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It enhances a population's ability to adapt to changes. Provides raw material for natural selection and evolution.
It enhances a population's ability to adapt to changes. Provides raw material for natural selection and evolution.
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Explain the term 'ecological niche'.
Explain the term 'ecological niche'.
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The role and position a species has in its environment. Defines how species utilize resources and interact with environment.
The role and position a species has in its environment. Defines how species utilize resources and interact with environment.
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What is an invasive species?
What is an invasive species?
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A non-native species that adversely affects its new environment. Can outcompete natives and disrupt ecological balance.
A non-native species that adversely affects its new environment. Can outcompete natives and disrupt ecological balance.
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What is the significance of genetic variation?
What is the significance of genetic variation?
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It enhances a population's ability to adapt to changes. Provides raw material for natural selection and evolution.
It enhances a population's ability to adapt to changes. Provides raw material for natural selection and evolution.
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Identify a conservation strategy for biodiversity.
Identify a conservation strategy for biodiversity.
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Establishing protected areas. Preserves critical habitats and reduces human interference.
Establishing protected areas. Preserves critical habitats and reduces human interference.
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What is a biodiversity hotspot?
What is a biodiversity hotspot?
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A region with significant levels of biodiversity that is under threat. These areas are conservation priorities due to high endemism.
A region with significant levels of biodiversity that is under threat. These areas are conservation priorities due to high endemism.
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What is a secondary consumer?
What is a secondary consumer?
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An organism that eats primary consumers. Carnivores at the third trophic level.
An organism that eats primary consumers. Carnivores at the third trophic level.
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What is species diversity?
What is species diversity?
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The variety and abundance of species in a given area. Includes both the number of species and their relative abundance.
The variety and abundance of species in a given area. Includes both the number of species and their relative abundance.
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Explain ecosystem diversity.
Explain ecosystem diversity.
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The variety of ecosystems in a given area. Includes different habitat types and their spatial arrangements.
The variety of ecosystems in a given area. Includes different habitat types and their spatial arrangements.
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Define 'biomass'.
Define 'biomass'.
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The total mass of organisms in a given area or volume. Indicates ecosystem productivity and energy storage.
The total mass of organisms in a given area or volume. Indicates ecosystem productivity and energy storage.
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What is the role of keystone species in an ecosystem?
What is the role of keystone species in an ecosystem?
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They have a disproportionately large effect on their environment. Their removal causes cascading effects throughout the ecosystem.
They have a disproportionately large effect on their environment. Their removal causes cascading effects throughout the ecosystem.
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What is the 'species-area relationship'?
What is the 'species-area relationship'?
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A principle stating that larger areas have more species. Larger habitats support more species due to resource availability.
A principle stating that larger areas have more species. Larger habitats support more species due to resource availability.
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Name the three levels of biodiversity.
Name the three levels of biodiversity.
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Genetic, species, and ecosystem diversity. These represent the hierarchical organization of life's variety.
Genetic, species, and ecosystem diversity. These represent the hierarchical organization of life's variety.
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What is a 'biotic index'?
What is a 'biotic index'?
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A scale for showing the quality of an environment by indicating the types of organisms present. Uses indicator species to assess environmental health.
A scale for showing the quality of an environment by indicating the types of organisms present. Uses indicator species to assess environmental health.
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What is the significance of a 'keystone species'?
What is the significance of a 'keystone species'?
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Their presence or absence has a large impact on ecosystem structure. Their loss causes disproportionate ecosystem changes.
Their presence or absence has a large impact on ecosystem structure. Their loss causes disproportionate ecosystem changes.
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What is the '10% rule' in ecology?
What is the '10% rule' in ecology?
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Only about 10% of energy is transferred between trophic levels. Most energy is lost as heat during metabolic processes.
Only about 10% of energy is transferred between trophic levels. Most energy is lost as heat during metabolic processes.
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What is 'ecological footprint'?
What is 'ecological footprint'?
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A measure of human demand on Earth's ecosystems. Compares human resource use to Earth's regenerative capacity.
A measure of human demand on Earth's ecosystems. Compares human resource use to Earth's regenerative capacity.
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Identify a consequence of low genetic diversity.
Identify a consequence of low genetic diversity.
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Increased vulnerability to diseases. Reduces population resilience and adaptive potential.
Increased vulnerability to diseases. Reduces population resilience and adaptive potential.
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What is 'species richness'?
What is 'species richness'?
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The number of different species represented in an ecological community. Simple count of species without considering abundance.
The number of different species represented in an ecological community. Simple count of species without considering abundance.
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Define 'niche partitioning'.
Define 'niche partitioning'.
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The process by which competing species use the environment differently. Reduces competition by utilizing different resources or spaces.
The process by which competing species use the environment differently. Reduces competition by utilizing different resources or spaces.
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What is the significance of the IUCN Red List?
What is the significance of the IUCN Red List?
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It assesses the conservation status of species. Categorizes species from least concern to critically endangered.
It assesses the conservation status of species. Categorizes species from least concern to critically endangered.
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Name a human activity that contributes to habitat loss.
Name a human activity that contributes to habitat loss.
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Deforestation. Removes habitat and fragments remaining natural areas.
Deforestation. Removes habitat and fragments remaining natural areas.
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What is the primary cause of current biodiversity loss?
What is the primary cause of current biodiversity loss?
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Human activities. Anthropogenic impacts exceed natural extinction rates.
Human activities. Anthropogenic impacts exceed natural extinction rates.
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What is a biotic factor?
What is a biotic factor?
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A living component that affects an ecosystem. Includes all organisms and their biological processes.
A living component that affects an ecosystem. Includes all organisms and their biological processes.
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What is habitat fragmentation?
What is habitat fragmentation?
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The division of large habitats into smaller, isolated sections. Reduces population size and increases edge effects.
The division of large habitats into smaller, isolated sections. Reduces population size and increases edge effects.
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Define genetic diversity.
Define genetic diversity.
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The variety of genes within a species. Essential for adaptation and evolutionary potential.
The variety of genes within a species. Essential for adaptation and evolutionary potential.
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What is biodiversity?
What is biodiversity?
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The variety of life in the world or a particular habitat or ecosystem. Encompasses all living organisms and their interactions.
The variety of life in the world or a particular habitat or ecosystem. Encompasses all living organisms and their interactions.
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What is the 'edge effect'?
What is the 'edge effect'?
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Changes in population or community structures at habitat boundaries. Results from different environmental conditions at habitat borders.
Changes in population or community structures at habitat boundaries. Results from different environmental conditions at habitat borders.
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