Biology Unit 1 Ecology Review 2020

Which of the following describes all the organisms of a particular species living in a given area?

• ecosystem

• community

• biome

• population

The diagram above represents relationships in an

ecosystem. What is the primary source of energy in

this environment?

• cellular respiration in the plants

• energy from minerals in the soil

• fossil fuels

• solar energy

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Stability within an ecosystem is achieved partially by

the presence of organisms that break down important

molecules and make them available for other

organisms to use. These organisms are

• plants

• herbivores

• scavengers

• decomposers

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Producers are generally found at the beginning of a

food chain. Which statement best explains why this

is true?

• Producers are usually smaller in size than

  consumers.

• Producers do not rely on other organisms for

  food.

• There are always more consumers than

  producers in food chains.

• Consumers are always more complex

  organisms than producers.

Carbon dioxide and oxygen are important resources

in ecosystems and are

• recycled through the activity of living and

  nonliving systems

• stored in the animals of the ecosystem

• lost due to the activities of decomposers

• released by the process of photosynthesis

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NGSS.MS-LS2-3

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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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Consumer that eats plants

• heterotroph
• herbivore
• producer
• community

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The rabbit in this food web would be considered a:

• Decomposer
• Producer
• Secondary Consumer
• Primary Consumer

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What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

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NGSS.MS-LS2-3