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Grade 6 Science · Ecosystems

Grade 6 Ecosystems Practice Test

Build Grade 6 Science skills with five 10-question practice tests on biotic and abiotic factors, habitats, populations, communities, interactions, carrying capacity, and biodiversity.

Ecosystems Practice Tests

These Grade 6 Science practice tests help students understand how organisms interact with one another and with nonliving parts of their environment. Students practice biotic and abiotic factors, habitats, populations, communities, producers, consumers, decomposers, competition, symbiosis, carrying capacity, biodiversity, and ecosystem change.

Skills covered

  • Identifying biotic and abiotic ecosystem factors
  • Distinguishing organisms, populations, communities, habitats, and ecosystems
  • Explaining the roles of producers, consumers, and decomposers
  • Analyzing competition, predation, symbiosis, and limiting factors
  • Understanding carrying capacity and biodiversity
  • Using observations and data to explain ecosystem changes

How to use these practice tests

Begin by identifying whether each factor is living or nonliving. Then classify the level of organization and examine the relationship described. For population questions, look for resources, limiting factors, evidence of change, and how one population may affect others in the ecosystem.

For more Grade 6 Science practice, return to the Grade 6 Science category.

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1. Test

Grade 6 Ecosystems Practice Tests

A 10-question Grade 6 Science practice test on ecosystems, biotic and abiotic factors, habitats, populations, communities, interactions, carrying capacity, and biodiversity.

Identify ecosystem components, analyze relationships among organisms and environmental factors, and use evidence to explain population and ecosystem changes.

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 community of organisms and the nonliving environment they interact with.

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: An ecosystem includes living communities and nonliving factors connected through interactions.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

An ecosystem includes living communities and nonliving factors connected through interactions.

2. QuestionMultiple choice

Which is a biotic factor in a pond ecosystem?

Please select an answer first.

Correct answer: B

The correct answer is A frog.

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: A biotic factor is a living part of an ecosystem, such as a frog.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

A biotic factor is a living part of an ecosystem, such as a frog.

3. QuestionMultiple choice

Which is an abiotic factor in a desert ecosystem?

Please select an answer first.

Correct answer: C

The correct answer is The amount of rainfall.

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: Abiotic factors are nonliving conditions, and rainfall affects desert organisms.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

Abiotic factors are nonliving conditions, and rainfall affects desert organisms.

4. QuestionMultiple choice

What is a habitat?

Please select an answer first.

Correct answer: D

The correct answer is The place where an organism lives and obtains the resources it needs.

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: A habitat provides the conditions and resources an organism needs to survive.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

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

5. QuestionMultiple choice

What is a population?

Please select an answer first.

Correct answer: A

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

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: A population consists of organisms of the same species in a particular area.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

A population consists of organisms of the same species in a particular area.

6. QuestionMultiple choice

What is a community?

Please select an answer first.

Correct answer: B

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

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: A community includes multiple populations of different species.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

A community includes multiple populations of different species.

7. QuestionMultiple choice

Why is sunlight important in many ecosystems?

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 concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: Sunlight is the starting energy source for photosynthesis in many ecosystems.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

Sunlight is the starting energy source for photosynthesis in many ecosystems.

8. QuestionMultiple choice

Which example shows an organism interacting with an abiotic factor?

Please select an answer first.

Correct answer: D

The correct answer is A plant grows toward sunlight..

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: Sunlight is nonliving, so a plants response to it is an interaction with an abiotic factor.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

Sunlight is nonliving, so a plants response to it is an interaction with an abiotic factor.

9. QuestionMultiple choice

What can happen when a drought reduces water in an ecosystem?

Please select an answer first.

Correct answer: A

The correct answer is Organisms may compete more strongly for the remaining water..

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: A reduced resource can increase competition and affect population sizes.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

A reduced resource can increase competition and affect population sizes.

10. QuestionMultiple choice

Why do ecosystems differ from one another?

Please select an answer first.

Correct answer: B

The correct answer is They have different living communities and environmental conditions..

  1. Identify the ecosystem concept: Determine whether the question asks about an organism, population, community, habitat, or environmental factor.
  2. Use the relationship: Climate, resources, and species vary among ecosystems.
  3. Check the system: Consider how living and nonliving parts interact and affect the stability of the ecosystem.

Climate, resources, and species vary among ecosystems.

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Frequently asked questions about Grade 6 Ecosystems

What topics are covered?

The page covers biotic and abiotic factors, habitats, populations, communities, producers, consumers, decomposers, interactions, limiting factors, carrying capacity, biodiversity, and ecosystem investigations.

How should students study ecosystems?

Practice classifying living and nonliving factors, tracing relationships among organisms, and explaining how resources and environmental changes affect populations.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 6 Ecosystems questions in total.