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Questions and Answers
The biosphere includes only the planet's land and water.
The biosphere includes only the planet's land and water.
False
A species is a group of organisms that cannot breed and produce fertile offspring.
A species is a group of organisms that cannot breed and produce fertile offspring.
False
An ecosystem consists only of living organisms.
An ecosystem consists only of living organisms.
False
A community is a group of different species that live in the same area.
A community is a group of different species that live in the same area.
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Temperature is a biotic factor that influences an ecosystem.
Temperature is a biotic factor that influences an ecosystem.
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A habitat provides only food and shelter to an organism.
A habitat provides only food and shelter to an organism.
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A life table is an age-specific summary of the reproductive pattern of a population.
A life table is an age-specific summary of the reproductive pattern of a population.
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Abiotic limiting factors such as a storm or a fire are density-dependent.
Abiotic limiting factors such as a storm or a fire are density-dependent.
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Commensalism is an interaction that is beneficial for both species.
Commensalism is an interaction that is beneficial for both species.
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Mutualism is an interaction that has a negative effect on one species and a neutral effect on the other.
Mutualism is an interaction that has a negative effect on one species and a neutral effect on the other.
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Amensalism occurs when both competitors incur a cost.
Amensalism occurs when both competitors incur a cost.
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Community ecology examines the interactions within a single population.
Community ecology examines the interactions within a single population.
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Autotrophs are organisms that rely on other organisms for their energy and food supply.
Autotrophs are organisms that rely on other organisms for their energy and food supply.
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Detritivores are a type of decomposer that breaks down dead or decay matter.
Detritivores are a type of decomposer that breaks down dead or decay matter.
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Energy flows through an ecosystem in a circular direction from autotrophs to heterotrophs and back to autotrophs.
Energy flows through an ecosystem in a circular direction from autotrophs to heterotrophs and back to autotrophs.
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A food chain is a network of complex feeding relationships among the various organisms in an ecosystem.
A food chain is a network of complex feeding relationships among the various organisms in an ecosystem.
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About 50% of the energy available within one trophic level is passed to organisms in the next trophic level in an energy pyramid.
About 50% of the energy available within one trophic level is passed to organisms in the next trophic level in an energy pyramid.
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Parasites are a type of autotroph that produces its own food through photosynthesis.
Parasites are a type of autotroph that produces its own food through photosynthesis.
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Threatened species are those that are already endangered.
Threatened species are those that are already endangered.
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Ecosystem services include only purification of air and water.
Ecosystem services include only purification of air and water.
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Habitat destruction is the only major threat to biodiversity.
Habitat destruction is the only major threat to biodiversity.
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Species with smaller ranges or poor dispersal abilities are better protected from extinction.
Species with smaller ranges or poor dispersal abilities are better protected from extinction.
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There have been only three mass extinctions in the history of the Earth.
There have been only three mass extinctions in the history of the Earth.
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Primary succession occurs in an environment where soil already exists.
Primary succession occurs in an environment where soil already exists.
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Lichen is an example of a pioneer species in ecological succession.
Lichen is an example of a pioneer species in ecological succession.
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Ecology only focuses on the interactions between organisms and their environment at the organism level.
Ecology only focuses on the interactions between organisms and their environment at the organism level.
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An animal's niche is the same as its environment.
An animal's niche is the same as its environment.
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Biotic factors include sunlight and temperature.
Biotic factors include sunlight and temperature.
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Secondary succession occurs after a natural disaster that destroys the soil and the community.
Secondary succession occurs after a natural disaster that destroys the soil and the community.
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