Food Chains and Ecosystems Review

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

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A food web for a prairie ecosystem is shown above. Food webs show how energy gets transferred among living things. All plants and animals need energy in order to survive. Based on this information, which statement is correct?

• Only the frogs could survive without the Sun.

• Only the grass could survive without the Sun.

• The wasps and the spiders could survive without the Sun.

• None of the organisms in the food web could survive without the Sun.

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Click on the image to make it larger. Choose all that apply: The hawk gets its energy from...

• mouse

• wildflowers

• rabbit

• snake

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NGSS.MS-LS2-3

Click on the image to make it larger. Choose all that apply: Choose the living things that are producers.

• mouse

• wildflowers

• grass

• snake

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What does a food web represent?

• All connections of energy flow throughout all organisms in an ecosystem.

• The specific ways that mutualism is carried out.

• A single pathway or energy flow between organisms.

• How carnivores get their food.

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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.

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

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The ultimate source of energy for almost all living organisms is

• the Sun.

• bacteria.

• plants.

• animals.

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The Sun provides energy. Plants use the energy to make food. How do some animals get energy? *

• Animals get energy by eating the plants.

• All animals get energy by hibernating.

• Animals absorb the Sun's energy and make their own food

• Animals do not need energy.

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Through the process of photosynthesis, producers such as phytoplankton change sunlight into sugars. Cedric redraws a food chain to show one more level before the phytoplankton. What would this new level be?

• plants

• zooplankton

• the Sun

• water

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