Lesson 3 Check: Role of Decomposers

How do decomposers help plants?

• They help with photosynthesis.

• They enrich the soil.

• They provide oxygen.

• They hold water.

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________________ can sprout from the soil like plants, but cannot make its own food.

Energy and other materials from dead organisms are recycled back into the soil by ______.

• producers

• herbivores

• omnivores

• decomposers

Organisms, such as fungi and (a)   , that break down dead organisms and return them as nutrients to the soil, are known as (b)   .

• decomposers

• scavengers

• herbivores

• carnivores

Tags

NGSS.MS-LS2-3

How does placing compost in your garden improve the natural environment?

• It makes the soil harder.

• It makes the soil unusable.

• It helps keep insects away.

• It makes the soil rich in nutrients.

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(a)   break down decaying material in an ecosystem.

• Producers

• Decomposers

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The job of decomposers is to break down dead plants and animals into useful substances. This job is their __________.

• adaptation

• skill

• niche

• habitat

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NGSS.MS-LS2-3

Predict how drought could affect the amount of food for each organism shown in the model.

• Drought increases the amount of food for each organism.

• Drought decreases the amount of food for each organism.

• Drought has no effect on the amount of food for each organism.

• Drought causes a temporary increase in food supply.

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Predict how the ecosystem would be affected if the decomposers shown in the model die.

• The population of producers will increase.

• The nutrient cycle will be disrupted.

• The population of herbivores will increase.

• The ecosystem will remain unaffected.

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What is the name of the process where the remains of living things rot, decay or break down?

• Disintegration
• Dissolve
• Decomposition
• Recycling

Tags

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