Chapter 5 Review- Ecosystems

Which best describes algae?

• predators in a salt marsh ecosystem

• producers in a pond

• consumers in an ocean

• prey in a forest ecosystem

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Which organisms make their own food through the process of photosynthesis?

• decomposers

• consumers

• producers

• herbivores

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Animals release carbon dioxide into the air. What happens to some of the carbon dioxide?

• Other animals use it for energy.

• Plants use it when they make food.

• It becomes nutrients in the soil.

• Bacteria use it to break down waste.

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If one kind of producer is removed from an ecosystem's food web, what will most likely happen?

• None of the other organisms in the food web will be affected.

• Only the other producers in the food web will be affected.

• Many other organisms in the food web will be affected.

• Only the consumers in the food web will be affected.

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Which term best describes the ecosystem in the picture?

• forest ecosystem

• grassland ecosystem

• terrestrial ecosystem

• aquatic ecosystem

In which ecosystem will you most likely find bison, prairie dogs, and woody schrubs?

• grassland

• pond

• salt marsh

• forest

Which is most likely the missing living thing in the food chain below?

?

l

mouse

l

fox

• grasshopper

• grass

• hawk

• bird

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Which of these organisms are decomposers?

• bacteria

• wolves

• trees

• lions

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Which statement describes a relationship between a consumer and a producer?

• A chipmunk eats wild berries.

• A fox eats a chipmunk

• A large fish eats a small fish.

• A fungus breaks down a dead tree.

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Which type of animal eats only or mostly plants?

• ominivore

• producer

• herbivore

• carnivore