QUIZ: Energy Flow in Ecosystems

Which diagram correctly shows how energy flows within this food web?

• Grass → ant → topi → pangolin

• Grass → mouse → gazelle → caracal

• Tree → elephant → giraffe → cheetah

• Tree → elephant → hyena → lion

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NGSS.MS-LS2-3

Which organisms are the source of all energy in this ecosystem and essential to the transfer of energy within this food web?

• Grass, shrubs, and trees

• Grass, ants, and lions

• Trees, grasshoppers, and termites

• Trees, mice, and shrubs

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

The squid is a ______________, the copepods are a ____________, the lantern fish is a _____________, and the diatom is a ____________.

• primary consumer; producer; secondary consumer; tertiary consumer

• tertiary consumer; primary consumer; secondary consumer; producer

• secondary consumer; tertiary consumer; producer; primary consumer

• tertiary consumer; producer; primary consumer; secondary consumer

Tags

NGSS.MS-LS2-3

Look at the energy pyramid. Think about the following organisms. Choose the correct order for each animal on the pyramid from top to bottom.

• Wolf, snake, rabbit, plant

• Rabbit, plant, snake, wolf

• Plant, rabbit, snake, wolf

• Snake, rabbit, plant, wolf

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The type of consumer that gets the most energy from its food source is:

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Decomposer

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NGSS.MS-LS2-3

How does energy change in the trophic levels of this food pyramid? Explain why there are fewer animals at the top than at the bottom of this pyramid.

• Energy increases as you move up the pyramid, and there are more animals at the top because they need more energy.

• Energy decreases as you move up the pyramid, and there are fewer animals at the top because less energy is available.

• Energy stays the same at all levels, and the number of animals is equal at each level.

• Energy is not transferred between levels, and the number of animals is random.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Explain why the available energy decreases by 10 percent in successive trophic levels in the energy pyramid.

• The available energy decreases by 10 percent in successive trophic levels in the energy pyramid because only 10 percent of the energy from any trophic level is passed on to the next level. The rest is lost as it travels up the energy pyramid.

• The available energy decreases by 10 percent in successive trophic levels in the energy pyramid because energy is created at each level.

• The available energy decreases by 10 percent in successive trophic levels in the energy pyramid because all energy is stored and not used.

• The available energy decreases by 10 percent in successive trophic levels in the energy pyramid because energy increases as it moves up the pyramid.

Tags

NGSS.MS-LS2-3

Explain why there are more mice than hawks in an ecosystem, according to the energy pyramid.

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NGSS.MS-LS2-1

NGSS.MS-LS2-3