Ecosystems NC5.L.2.2 (Part B)

1.

Multiple Choice

1 min

1 pt

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

2.

Multiple Choice

3 mins

1 pt

In a food chain, the sun provides energy for an apple tree to grow. A deer eats an apple from the tree. Which is a consumer?

the tree

the apple

the sun

the deer

3.

Multiple Choice

3 mins

1 pt

An ecosystem is a community of organisms interacting with their physical environment. Why are decomposers an important part of ecosystems?

They break down dead organisms to return nutrients to the soil.

They produce their own food for survival.

They play a role in preventing weathering and erosion.

They provide most of the energy to consumers.

4.

Multiple Choice

3 mins

1 pt

Which best describes a producer?

an organism that gets its energy from plants

a plant that makes its own food

the sun because it provides energy for plants

an organism that gets its energy from animals

5.

Multiple Choice

3 mins

1 pt

Tyler is classifying organisms according to their source of energy. Based on the food chain pictured, which organism would be considered a carnivore?

ant

bird

maple leaf

6.

Multiple Choice

3 mins

1 pt

What best describes the roles of the organisms pictured in order from left to right?

consumer, producer, consumer

producer, decomposer, consumer

consumer, decomposer, consumer

7.

Multiple Choice

3 mins

1 pt

Which is the first organism in a food chain?

decomposer

producer

consumer

8.

Multiple Choice

3 mins

1 pt

In which category are all living things most directly dependent upon the sun for energy?

carnivores

producers

herbivores

decomposers

9.

Multiple Choice

3 mins

1 pt

How are consumers and decomposers related?

Decomposers provide soil for consumers.

Consumers change the sun’s energy so it is useful for decomposers.

Decomposers provide food for carnivorous consumers.

Consumers provide nutrients for decomposers.

10.

Multiple Choice

3 mins

1 pt

Which best describes how decomposers help support life in an ecosystem?

Decomposers add nutrients to the soil.

Decomposers provide a habitat in the ecosystem.

Decomposers add producers to the ecosystem.

Decomposers provide energy for consumers.

11.

Multiple Choice

3 mins

1 pt

Which best describes the role of a first-level consumer in an ecosystem?

Consumers eat scavengers and pass the energy along in an ecosystem.

Consumers eat producers and pass the energy along in an ecosystem.

Consumers eat decomposers and pass the energy along in an ecosystem.

Consumers eat other consumers and pass the energy along in an ecosystem.

12.

Multiple Choice

3 mins

1 pt

Which best describes the role of decomposers in an ecosystem?

Decomposers eat consumers and pass along energy.

Decomposers eat scavengers and pass along energy.

Decomposers get energy from the sun to help producers.

Decomposers get energy by breaking down decaying matter.

13.

Multiple Choice

3 mins

1 pt

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

14.

Multiple Choice

3 mins

1 pt

Which is an example of a decomposer?

a hawk

a mouse

a flower

a mushroom

15.

Multiple Choice

3 mins

1 pt

Which best explains why producers are an important part of an ecosystem?

They pass the Sun’s energy on to other organisms.

They pass energy from consumers to decomposers.

They make their own energy and pass it on to other producers.

They pass energy from first-level consumers to second-level consumers.

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