NumicornNumicornLearn, solve, progress

Grade 4 Science · Ecosystem Interactions

Grade 4 Ecosystem Interactions Practice Test

Build Grade 4 Science skills with five 10-question practice tests on habitats, food chains, food webs, populations, resources, relationships, and ecosystem changes.

Ecosystem Interactions Practice Tests

These Grade 4 Science practice tests help students explain how organisms and nonliving factors interact. Students study habitats, populations, communities, producers, consumers, decomposers, food chains, food webs, competition, adaptations, resources, and ecosystem change.

Skills covered

  • Identifying living and nonliving parts of an ecosystem
  • Explaining the roles of producers, consumers, and decomposers
  • Reading food chains and food webs
  • Describing competition, predator-prey relationships, and cooperation
  • Explaining how resource changes affect populations
  • Using evidence to describe ecosystem changes and conservation actions

How to use these practice tests

For each question, identify the organism or environmental factor first. Then ask which resource, relationship, or change connects it to the rest of the ecosystem. Use the evidence in the situation to choose the best explanation.

For more Grade 4 Science practice, return to the Grade 4 Science category.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

1. Test

Grade 4 Ecosystem Interactions Practice Tests

A 10-question Grade 4 Science practice test on ecosystems, habitats, food chains, food webs, populations, resources, relationships, and environmental change.

Read each ecosystem situation and choose the answer that best explains how organisms and environmental factors interact.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is an ecosystem?

Please select an answer first.

Correct answer: A

The correct answer is A system that includes living things and the nonliving parts of their environment.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: An ecosystem includes organisms and nonliving factors such as water, air, soil, sunlight, and temperature.
  3. Check the choice: The correct choice is A system that includes living things and the nonliving parts of their environment.

An ecosystem includes organisms and nonliving factors such as water, air, soil, sunlight, and temperature.

2. QuestionMultiple choice

What does a habitat provide for an organism?

Please select an answer first.

Correct answer: B

The correct answer is The food, water, shelter, and space it needs to live.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: A habitat provides the resources and conditions an organism needs to survive and grow.
  3. Check the choice: The correct choice is The food, water, shelter, and space it needs to live.

A habitat provides the resources and conditions an organism needs to survive and grow.

3. QuestionMultiple choice

Which organism is a producer?

Please select an answer first.

Correct answer: C

The correct answer is A green plant that makes food using sunlight.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: Producers make their own food, usually by using light energy and materials from the environment.
  3. Check the choice: The correct choice is A green plant that makes food using sunlight.

Producers make their own food, usually by using light energy and materials from the environment.

4. QuestionMultiple choice

Which organism is a consumer?

Please select an answer first.

Correct answer: D

The correct answer is A deer that eats leaves.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: Consumers get energy by eating plants or other organisms.
  3. Check the choice: The correct choice is A deer that eats leaves.

Consumers get energy by eating plants or other organisms.

5. QuestionMultiple choice

What is one job of a decomposer?

Please select an answer first.

Correct answer: A

The correct answer is Breaking down dead matter and returning nutrients to the environment.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: Decomposers such as fungi and many bacteria break down dead material and help recycle nutrients.
  3. Check the choice: The correct choice is Breaking down dead matter and returning nutrients to the environment.

Decomposers such as fungi and many bacteria break down dead material and help recycle nutrients.

6. QuestionMultiple choice

Where does a simple food chain usually begin?

Please select an answer first.

Correct answer: B

The correct answer is With a producer such as a plant.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: A food chain usually begins with a producer that captures energy and makes food.
  3. Check the choice: The correct choice is With a producer such as a plant.

A food chain usually begins with a producer that captures energy and makes food.

7. QuestionMultiple choice

What role does sunlight often play in an ecosystem?

Please select an answer first.

Correct answer: C

The correct answer is It provides energy that producers use to make food..

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: Sunlight provides the energy used by plants and other producers to make food.
  3. Check the choice: The correct choice is It provides energy that producers use to make food..

Sunlight provides the energy used by plants and other producers to make food.

8. QuestionMultiple choice

What is a population?

Please select an answer first.

Correct answer: D

The correct answer is All members of one species living in the same area.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: A population is a group of organisms of the same species living in one area.
  3. Check the choice: The correct choice is All members of one species living in the same area.

A population is a group of organisms of the same species living in one area.

9. QuestionMultiple choice

What is a community?

Please select an answer first.

Correct answer: A

The correct answer is All the different populations living and interacting in an area.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: A community includes the populations of different species that live and interact in the same place.
  3. Check the choice: The correct choice is All the different populations living and interacting in an area.

A community includes the populations of different species that live and interact in the same place.

10. QuestionMultiple choice

Which description best includes all parts of an ecosystem?

Please select an answer first.

Correct answer: B

The correct answer is Plants, animals, decomposers, water, air, soil, sunlight, and other interacting factors.

  1. Identify the ecosystem clue: Look for the organism, resource, relationship, or environmental change described.
  2. Connect the clue to the ecosystem: Living and nonliving parts interact to form an ecosystem.
  3. Check the choice: The correct choice is Plants, animals, decomposers, water, air, soil, sunlight, and other interacting factors.

Living and nonliving parts interact to form an ecosystem.

Previous testNext test

Frequently asked questions about Grade 4 Ecosystem Interactions

What is an ecosystem?

An ecosystem is a system that includes living organisms and the nonliving parts of their environment, with all of these parts interacting.

What are producers, consumers, and decomposers?

Producers make their own food, consumers get energy by eating organisms, and decomposers break down dead matter and recycle nutrients.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 4 Ecosystem Interactions questions in total.