Ecosystems: Lessons #8-10

Organisms that consume dead plant and animal matter and return important nutrients into the soil are called ____________.

• producers

• consumers

• decomposers

• microbes

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NGSS.MS-LS2-2

What is the evidence for this scientific claim:

Claim:  I claim that redworms are decomposers.

• The amount of spinach in the container increased over time.

• The amount of spinach in the container decreased over time.

• The amount of worms in the container increased over time.

• The amount of water in the container decreased over time.

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What nonliving example provides energy to producers, consumers, and decomposers in a food web.

• air

• water

• sunlight

• soil

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NGSS.MS-LS2-3

In addition to returning waste and matter into the soil, what else do decomposers return into an ecosystem?

• BTB

• water

• Oxygen

• Carbon Dioxide

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NGSS.MS-LS2-3

True or False. Removing one entire consumer or producer from a food web will have no effect on the overall flow of energy and matter within an ecosystem.

• TRUE

• FALSE

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True or False. When animals consume food, whether it is plants or other animals, they are always getting a source of both matter and energy.

• TRUE

• FALSE

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Which of the following is classified as fungi?

• carrot

• squirrel

• acorn

• mushroom

Describe how matter is recycled by decomposers in an ecosystem.

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NGSS.MS-LS2-3

Which of the following is NOT an example of a producer in the food web shown?

• grasshopper

• carrot

• grain

• grass

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What are the top consumers in the food web shown?

• fox and rabbit

• fox and owl

• bird and fox

• mouse and grass

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