Living Systems

The diagram above shows a food chain for a marine ecosystem. Which of the following organisms best completes boxes X and Y to show how energy flows through this food chain?

• X is seaweed; Y is a crab

• X is seaweed; Y is water

• X is a shark; Y is seaweed

• X is a catfish; Y is seaweed

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does a Kodiak bear most likely use a fish that it catches?

• It throws the fish back in the water because it only fishes for sport.

• It eats the fish for energy.

• It gives the fish to other animals.

• It keeps the fish as a pet.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

All living organisms must take in energy in order to grow and survive. For animals, this energy comes from

• food they eat.

• moonlight.

• sounds they hear.

• motors in cars they drive.

Tags

NGSS.MS-LS2-3

The diagram above shows a food chain for a tundra ecosystem. Which of the following organisms best completes boxes X and Y to show how energy flows through this food chain?

• X is an arctic hare; Y is a reindeer

• X is an arctic hare; Y is the Sun

• X is grass; Y is an arctic hare

• X is the Sun; Y is an arctic hare

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

The diagram above shows a food chain for a prairie ecosystem. Which of the following organisms best completes boxes X and Y to show how energy flows through this food chain?

• X is the Sun; Y is the grass

• X is a rabbit; Y is the Sun

• X is an owl; Y is the Sun

• X is the Sun; Y is a coyote

Tags

NGSS.MS-LS2-3

Stephanie has had a long day. She is tired and wants to go straight to bed. Her mother makes her sit down and eat dinner first. After eating, Stephanie no longer feels so tired. Why did eating make Stephanie feel less tired?

• because food provides energy

• because it is too early to go to bed

• because food contains caffeine

• because exercise makes a person more alert

Tags

NGSS.MS-LS1-7

The diagram above shows a food chain for a desert ecosystem. Which of the following organisms best completes boxes X and Y to show how energy flows through this food chain?

• X is an ant; Y is a cactus

• X is a cactus; Y is grass

• X is a cactus; Y is a mouse

• X is a beetle; Y is a cactus

Tags

NGSS.MS-LS2-3

The arrows in the food web above show the direction in which energy flows. The food web is model. It shows that all the _____________ animals get by eating other organisms comes from the Sun

• light

• energy

• protein

• vitamins

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The ultimate source of energy for almost all living organisms is

• the Sun.

• bacteria.

• plants.

• animals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The Sun is an important source of energy on planet Earth. Which of the organisms below would die off if the Sun stopped producing energy? Select the correct image. More than one image may be correct.

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Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3