Ecology Terms

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

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What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

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An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph
• Producer
• Consumer
• Mutualist

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The nonliving parts of an ecosystem.

• Abiotic factors

• Biotic factors

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The living portions of the ecosystem.

• Biotic factors
• Abiotic factors

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The organisms that make up a community and the nonliving parts of the environment that they interact with are a(n)

• Population

• Community

• Habitat

• Ecosystem

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Plants that convert energy from the sun are also called

• decomposers

• primary consumers

• secondary consumers

• producers

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Organisms that break down decaying material are

• consumers

• producers

• decomposers

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What is the greenhouse effect?

• It is a phenomenon where the sun’s rays are absorbed by clouds.

• It is a phenomenon that occurs when heat escapes into space.

• It is when heat is trapped by gases, then sent back to earth’s surface.

• It describes the atmosphere’s composition.

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Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

• Mutualism

• Commensalism

• Parasitism

• Neutralism

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