4.9AB: Producers, Consumers, and Food Webs

Plants get their food by —

• A. making it from sunlight.

• B. eating animals or insects.

• C. absorbing it from the soil.

• D. taking nutrients from the air.

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Food webs begin with energy supplied by –

• A. the Sun.

• B. the Moon.

• C. Earth’s core.

• D. green plants.

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In order to make their own food, plants need sunlight, water, and which gas from the atmosphere?

• A. Argon

• B. Nitrous oxide

• C. Oxygen

• D. Carbon dioxide

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The herring gull depends directly on all of the following organisms for food EXCEPT –

• A. blue crab.

• B. grass shrimp.

• C. diamondback terrapin.

• D. sheepshead minnow.

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If a highway were built through the middle of the prairie that destroyed most of the grass, what might be the effect on other organisms?

• A. Snakes would be forced to eat more mice.

• B. Deer would move elsewhere to find food.

• C. Mountain lions would hunt more squirrels.

• D. Robins would eat a different food than squirrels.

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Which organism can make its own food?

• A. Rabbit

• B. Daisy

• C. Mushroom

• D. Earthworm

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An elephant gets the energy it needs to survive when it –

• A. drinks water from streams.

• B. warms itself in the sun.

• C. eats grass and leaves.

• D. sleeps on the ground.

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In this food chain, the large fish gets it energy by –

• A. absorbing sunlight.

• B. eating plants.

• C. preying on small fish.

• D. being food for hawks.

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If all of the squirrels were removed from this food web, which animal population will most likely decrease first?

• A. Antelopes

• B. Coyotes

• C. Mountain lions

• D. Hawks

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If a pesticide killed all the insect larvae in this food web, all of the following would immediately result EXCEPT –

• A. bass would have more minnows to eat.

• B. snails would have more algae available.

• C. sunfish would be forced to eat more snails.

• D. minnows would lose a source of energy.

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