Ecosystem Flow of Energy Practice Quiz

Which organism is typically at the bottom of a food chain?

• Carnivores

• Herbivores

• Producers

• Decomposers

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NGSS.MS-LS1-6

What role do decomposers play in an ecosystem?

• They produce their own food through photosynthesis.

• They consume living plants and animals.

• They break down dead organisms, returning nutrients to the soil.

• They prey on other animals.

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NGSS.MS-LS2-3

In a producer-consumer relationship, what do producers do?

• Consume other organisms for energy

• Decompose organic material

• Produce energy-rich compounds through photosynthesis

• Prey on consumers

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NGSS.MS-LS1-6

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What is the primary function of photosynthesis in an ecosystem?

• To consume other organisms

• To decompose dead matter

• To convert solar energy into chemical energy

• To recycle nutrients

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NGSS.MS-LS1-6

Which of the following best describes mutualism?

• A relationship where both species benefit

• A relationship where one species benefits and the other is harmed

• A relationship where one species benefits and the other is unaffected

• A relationship where both species are harmed

Tags

NGSS.MS-LS2-2

In a predator-prey relationship, what happens to the predator population if the prey population decreases?

• It increases

• It decreases

• It remains stable

• It becomes extinct

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NGSS.MS-LS2-1

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What distinguishes a food web from a food chain?

• A food web consists of a single linear pathway of energy flow.

• A food web shows the relationship between producers and consumers only.

• A food web includes multiple interlinking food chains.

• A food web does not include decomposers.

Which of the following is an example of an ecosystem relationship?

• The sun providing energy for photosynthesis

• A lion eating a zebra

• A bee pollinating a flower

• All of the above

Tags

NGSS.MS-LS2-2

How does energy flow in an ecosystem?

• From decomposers to producers to consumers

• From producers to consumers to decomposers

• In a closed loop with no beginning or end

• From consumers to producers to decomposers

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NGSS.MS-LS1-6

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What is the role of a carnivore in a food chain?

• Primary producer

• Primary consumer

• Secondary consumer

• Decomposer

Tags

NGSS.MS-LS2-3