5.L.2.2 #2: Schoolnet

The main function of a producer in an ecosystem is to

• absorb minerals from the soil.

• change water vapor into a liquid.

• make sugar through photosynthesis.

• break down dead plant and animal matter.

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Which is most responsible for recycling dead plants and animals in an

ecosystem?

• water

• bacteria

• fish

• insects

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Which organism is a producer?

• frog

• mushroom

• grass

• lizard

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Which will most likely cause a decrease in predator populations?

• an increase in prey populations

• a decrease in prey populations

• a decrease in decomposers

• an increase in producers

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Which is an example of a decomposer?

• a hawk

• a mouse

• a flower

• a mushroom

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Which describes a decomposer?

• an organism that eats only plants

• an organism that makes its own food

• an organism that breaks down dead matter

• an organism that receives energy from the sun

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An energy pyramid shows that less food and energy is available moving from the bottom to the top.

Based on this model, where would producers be located on the energy pyramid?

• Level 1

• Level 2

• Level 3

• Level 4

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Which gets all of its energy from the sun?

• producer

• consumer

• decomposer

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Which best explains why producers are at the beginning of all food

chains?

• They turn dead animals into nutrients.

• They provide shelter for smaller animals.

• They transfer energy from the sun into food.

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When an animal dies in an ecosystem a mushroom will sometimes grow

on the remains of the animal. Which best describes the role of the

mushroom in the ecosystem?

• producer

• consumer

• decomposer

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