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.
5. 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 A clover plant.
Clover is a plant that makes its own food using sunlight.
Please select an answer first.
Correct answer: B
The correct answer is A grasshopper eating clover.
The grasshopper is a consumer because it eats a plant.
Please select an answer first.
Correct answer: C
The correct answer is Temperature.
Temperature is nonliving, so it is an abiotic factor.
Please select an answer first.
Correct answer: D
The correct answer is Sun → clover → grasshopper → frog.
Energy moves from the Sun to the producer and then to consumers.
Please select an answer first.
Correct answer: A
The correct answer is The area that supplies the organism with what it needs to live.
A habitat provides resources such as food, water, shelter, and space.
Please select an answer first.
Correct answer: B
The correct answer is With sunlight captured by plants.
Plants use sunlight to make food, starting many food chains.
Please select an answer first.
Correct answer: C
The correct answer is Sunlight, plant, grasshopper, frog.
The sequence follows energy from the Sun to a producer and then to consumers.
Please select an answer first.
Correct answer: D
The correct answer is My brother learned to play chess..
The chess sentence is unrelated to the pond ecosystem.
Please select an answer first.
Correct answer: A
The correct answer is Plants, animals, decomposers, and nonliving factors are connected..
This conclusion summarizes the connected parts of an ecosystem.
Please select an answer first.
Correct answer: B
The correct answer is To understand how organisms get energy and depend on their surroundings.
Food chains and habitats show how organisms receive energy and use resources.
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.
