Ecosystem Basics Quiz

An ecosystem is made of living and nonliving things.

• Only nonliving things

• True

Plants are called producers because they make their own food.

• True

• They are decomposers

Water and sunlight are abiotic factors. What does "abiotic" mean?

• Nonliving

• Living

Decomposers help break down dead plants and animals. Why is this important for an ecosystem?

• It stops food chains

• It helps recycle nutrients

A food chain shows how energy moves through an ecosystem. Which of the following best describes the flow of energy in a food chain?

• Energy moves from producers to consumers to decomposers

• Energy moves from consumers to producers to decomposers

If one part of an ecosystem changes, what can happen to other parts?

• It can affect other parts.

• Only plants are affected.

What is the correct answer to the statement: "If one part of an ecosystem changes, it can affect other parts"?

• Never

• True

Why is it important to understand that changes in one part of an ecosystem can affect other parts?

• Because only animals matter.

• Because all parts of an ecosystem are connected.

If a new animal is introduced to an ecosystem, what might happen to the other parts of the ecosystem?

• Other parts may be affected.

• Nothing will change.

Which of the following best describes an ecosystem?

• A system where all parts can affect each other.

• A place where only plants live.