Decomposers in Ecosystems Quiz

What is the role of decomposers in an ecosystem?

• They produce food through photosynthesis.

• They break down dead organisms and recycle nutrients.

• They hunt and eat other animals.

• They provide shelter for small animals.

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NGSS.MS-LS2-3

Which of the following is an example of a decomposer?

• Lion

• Oak tree

• Bacteria

• Eagle

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What is compost primarily made from?

• Rocks and minerals

• Plastic and metal

• Organic waste like food scraps and leaves

• Water and air

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NGSS.MS-LS2-3

Which term refers to organisms like mushrooms that help decompose organic material?

• Producers

• Consumers

• Fungi

• Predators

What is the role of decomposers in an ecosystem?

• They produce their own food.

• They eat other living organisms.

• They break down dead organisms and recycle matter.

• They provide shelter for animals.

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What happens to a fallen tree over many years due to decomposers?

• It remains unchanged.

• It turns into a new tree.

• It becomes a patch of rich soil.

• It disappears completely.

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Which of the following is NOT a characteristic of decomposers?

• They make their own food.

• They use matter from dead plants and animals.

• They help recycle nutrients in the ecosystem.

• They break down dead organisms.

What are fungi classified as?

• Plants

• Animals

• Neither plant nor animal

• Insects

What is the role of bacteria in the soil?

• To produce food

• To decompose dead materials

• To grow plants

• To create oxygen

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NGSS.MS-LS2-3

Which of the following organisms live in soil and help break down dead materials?

• Earthworms

• Butterflies

• Birds

• Fish

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