Test Review 2

The food web represents the interactions of organisms. This food web reveals that, as energy flows through trophic levels,

• the amount of energy that reaches decomposers, such a a fungus, gradually increases

• the amount of energy that reaches the Sun gradually decreases.

• the amount of energy that reaches high-level consumers, such as the bald eagle, gradually decreases.

• the amount of energy that reaches producers, such as the Texas walnut, rapidly increases.

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NGSS.MS-LS2-3

Which figure best illustrates the amount of energy available at each level in the ecosystem?

• Figure D

• Figure B

• Figure C

• Figure A

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The diagram represents an energy pyramid.

At each successive level from A to D, the amount of available energy

• increases

• decreases

• increases, then decreases

• remains the same

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NGSS.MS-LS2-3

The energy pyramid below illustrates some feeding relationships in alpine meadows of Yellowstone National Park.

Which statement is best supported by the information shown in the pyramid?

• Biomass decreases as energy is transferred from one level to another.

• Chipmunks and insects can occupy the same niche

• Insects are classified as omnivores in alpine meadow communities.

• The number of chipmunks will increase as the number of bears increases.

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Santiago wanted to draw a food web of the desert. The table shows some of the desert organisms and what they eat.

In order to draw the food web correctly, which organisms should have two arrows pointing toward them?

• the rattlesnakes

• the hawks

• the roadrunners

• the desert grasses

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NGSS.MS-LS2-2

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The energy pyramid below represents the trophic levels in a food web.

Assume that the producers in this ecosystem have 100,000 kcal of stored energy. About how much of this energy would reach the tertiary consumers in the ecosystem?

• 100 kcal

• 1,000 kcal

• 70,000 kcal

• 73,000 kcal

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NGSS.MS-LS1-6

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The diagram below models a swamp food web. Use the diagram to answer any questions that follow.

Where is 100% of the energy formed in this swamp food web?

• in the producers, such as algae

• in the herbivores, such as ducks

• in the carnivores, such as bullfrogs

• in the decomposers, such as bacteria

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NGSS.MS-LS1-6

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The diagram below models a swamp food web. Use the diagram to answer any questions that follow.

What belongs at X in the food web?

• thermal energy

• light energy

• phosphates

• water

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NGSS.MS-LS1-6

NGSS.MS-LS2-3