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Which statement about photosynthesis is true?

• Plants and animals can survive without photosynthesis.

• Plants and animals cannot survive without photosynthesis.

• Photosynthesis has no impact on animals.

• Photosynthesis has no impact on plants.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which action begins photosynthesis in plants?

• chlorophyll in the leaf capturing light energy

• the conversion of light energy into chemical energy

• the conversion of sunlight into chlorophyll

• roots absorbing chemical energy

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NGSS.MS-LS1-6

Which statement explains what occurs during photosynthesis?

• Plants take in minerals and release carbon dioxide.

• Plants take in carbon dioxide and release oxygen.

• Plants take in sugar and release minerals.

• Plants take in oxygen and release sugar.

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NGSS.MS-LS1-6

What would most likely happen if decomposers were removed from an ecosystem?

• Less organic matter would be returned to the soil.

• More organic matter would be returned to the soil.

• Producers would be unable to complete photosynthesis.

• Consumers would be unable to obtain energy from producers.

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Form a hypothesis

Analyze results

Communicate results

Ask a question

Conduct experiment

What role do consumers perform related to energy flow within an ecosystem?

• Consumers take in energy when they eat other organisms.

• Consumers block energy taken in directly from the sun.

• Consumers allow decomposers to use energy from food to survive.

• Consumers release energy so that producers can make food.

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NGSS.MS-LS2-3

Which situation best demonstrates the decomposition process where

organic material is recycled in an ecosystem?

• a hawk eating a mouse

• worms tunneling through soil

• bacteria feeding on dead plants

• a plant using nitrogen to make proteins

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NGSS.MS-LS2-3

What does a food chain represent?

• the flow of energy within an ecosystem

• how energy is used within an ecosystem

• all the foods that a particular animal eats

• how plants create food through photosynthesis

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NGSS.MS-LS2-3

How are bacteria in the soil beneficial in returning nutrients to a forest ecosystem?

• They decrease photosynthesis in plants, allowing nutrients to be

  conserved.

• They break down dead plants, allowing nutrients to return to the soil.

• They stop the flow of energy in the forest food web and prevent

  nutrients from being lost to the atmosphere.

• They help animals digest the plants they consume and convert the

  nutrients into energy.

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

What do herbivores and carnivores have in common?

• They are scavengers.

• They are consumers.

• They are producers.

• They are omnivores.