Grade 3 Science · Ecosystems
Explore Grade 3 Science with five 10-question practice tests on habitats, biotic and abiotic factors, food chains, producers, consumers, decomposers, and ecosystem relationships.
These Grade 3 Science practice tests help students understand how living things interact with one another and with nonliving parts of their habitats. Students practice food chains, energy flow, and ecosystem roles.
Look for clues about whether something is living or nonliving. Then identify how organisms get energy, what resources their habitats provide, and how a change in one population can affect others.
For more Grade 3 Science practice, return to the Grade 3 Science category.
3. Test
A 10-question Grade 3 Science practice test on ecosystems, habitats, biotic and abiotic factors, producers, consumers, decomposers, and food chains.
Read each ecosystem question carefully. Identify the living or nonliving part, the organism role, or the relationship described, then choose the best answer.
Please select an answer first.
Correct answer: A
The correct answer is Very little rainfall.
Rainfall is nonliving, and deserts receive very little of it.
Please select an answer first.
Correct answer: B
The correct answer is Water plants.
Water plants make their own food using sunlight.
Please select an answer first.
Correct answer: C
The correct answer is A deer eating leaves.
The deer is a consumer because it eats plant material.
Please select an answer first.
Correct answer: D
The correct answer is Food, water, shelter, and space.
A habitat provides the resources an organism needs to survive.
Please select an answer first.
Correct answer: A
The correct answer is It can go a long time without drinking water..
This feature helps a camel survive where water is scarce.
Please select an answer first.
Correct answer: B
The correct answer is Shelter can protect them from weather and predators..
Shelter provides protection and a safe place to rest or raise young.
Please select an answer first.
Correct answer: C
The correct answer is They could lose water, food, and living space..
A dry pond removes important resources and changes the habitat.
Please select an answer first.
Correct answer: D
The correct answer is A rock.
A rock is nonliving, while the other choices are organisms.
Please select an answer first.
Correct answer: A
The correct answer is Both have living and nonliving parts that interact..
All ecosystems include living organisms and nonliving factors, even when conditions differ.
Please select an answer first.
Correct answer: B
The correct answer is Different habitats provide different conditions and resources for organisms..
Habitats differ in conditions and resources, and organisms depend on them.
An ecosystem includes living things and the nonliving parts of an area that interact with one another.
A producer makes its own food, while a consumer gets energy by eating plants or other organisms.
The page includes five mini tests with 10 questions each, for 50 Grade 3 Ecosystems questions in total.
