Energy in ecosystems review

What is the primary role of producers in a food chain?

• To decompose organic matter

• To produce energy through photosynthesis

• To consume other organisms

• To break down dead organisms

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Which of the following is an example of a decomposer?

• Lion

• Oak tree

• Mushroom

• Eagle

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In a food web, what is the relationship between producers and consumers?

• Producers eat consumers

• Consumers eat producers

• Producers decompose consumers

• Consumers decompose producers

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How do decomposers contribute to an ecosystem?

• By producing energy through photosynthesis

• By consuming producers

• By breaking down dead organisms and recycling nutrients

• By competing with consumers for food

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Which of the following best describes a food chain?

• A complex network of interconnected food webs

• A straight line of organisms where each is eaten by the next

• A group of organisms that produce their own food

• A system where decomposers are at the top

Why are food webs considered more complex than food chains?

• They involve only producers and decomposers

• They show multiple feeding relationships among organisms

• They consist of a single linear path of energy flow

• They exclude decomposers

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NGSS.MS-LS2-3

Rabbits eat plants. What is the rabbit's role in an ecosystem?

• Producer

• Primary consumer

• Secondary consumer

• Decomposer

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What would likely happen to a food web if all the producers were removed?

• Consumers would increase in number

• Decomposers would become producers

• The entire food web would collapse

• Nothing would change

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How do food chains and food webs help in understanding ecosystems?

• They show how energy flows and how organisms are interconnected

• They only show the number of producers in an ecosystem

• They focus solely on the role of decomposers

• They highlight the importance of a single species

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Plants are _________ in an ecosystem.

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