Unit 18: Food Webs Review

Which statement correctly identifies one way energy is transferred through this tundra food web?

• A. Energy is transferred from grasses to lemmings to arctic foxes to polar bears.

• B. Energy is transferred from lichen to muskrats to polar bears.

• C. Energy is transferred from moss to caribou to snowy owls.

• D. Energy is transferred from grasses to muskrats to snowy owls to polar bears.

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Producers and consumers both directly rely on–

• Decomposers

• Water

• Soil

• Carbon Dioxide

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An eagle is a carnivore. It consumes and gets energy from ___________

• Oxygen

• Plants

• the Sun

• Rodents

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How are consumers different from producers?

• Consumers can only eat producers for food.

• Consumers need sunlight to make its own food.

• Consumers have to eat other organisms for food.

• Consumers need carbon dioxide to make its own food.

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How do nutrients, or energy, cycle through the food web including the Sun, a producer, a consumer, and a decomposer?

• Nutrients flow from the Sun to producers, then to consumers, and finally to decomposers, which return nutrients to the soil.

• Nutrients start with decomposers, move to consumers, then to producers, and finally to the Sun.

• Nutrients cycle only between producers and consumers, without involving decomposers or the Sun.

• Nutrients are created by consumers and passed directly to the Sun.

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Organisms that cannot create their own food, but must get it by eating other organisms, are known as

• consumers

• decomposers

• ecosystems

• producers

Which organism in the picture is a producer?

• cat

• chicken

• tree

• insect

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How does the energy flow to the owl?

• From the sun to plants to insects to the owl

• Directly from the sun to the owl

• From the owl to plants to insects

• From insects to plants to the sun

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Rattlesnakes can often be found in areas with warm dry climates. Rattlesnakes are predators that eat a wide variety of small rodents, reptiles, and insects. What main role does the rattlesnake play in the environment?

• Consumer

• Producer

• Scavenger

• Prey

Analyze the picture below. What do these four organisms have in common?

• They all get their energy from plants.

• They all live in forests.

• They all lay eggs.

• They all get their energy from other animals.