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Grade 6 Science · Food Webs and Energy Flow

Grade 6 Food Webs and Energy Flow Practice Test

Build Grade 6 Science skills with five 10-question practice tests on food chains, food webs, trophic levels, energy pyramids, producers, consumers, decomposers, and energy transfer.

Food Webs and Energy Flow Practice Tests

These Grade 6 Science practice tests help students model how energy moves through ecosystems. Students practice reading food chains and food webs, identifying producers and consumers, comparing trophic levels, interpreting energy pyramids, explaining decomposer roles, and predicting how population changes affect connected organisms.

Skills covered

  • Reading arrows and relationships in food chains and food webs
  • Identifying producers, primary consumers, secondary consumers, and decomposers
  • Comparing trophic levels and energy pyramids
  • Explaining why energy decreases as it moves through a food web
  • Distinguishing energy flow from matter cycling
  • Using evidence to predict effects of population and environmental changes

How to use these practice tests

Start at the producer and follow each arrow toward the organism that receives energy. Identify the trophic level of each organism, then consider how limited energy and resources affect the number of organisms at higher levels. Remember that energy flows through an ecosystem while materials are recycled by decomposers.

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

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1. Test

Grade 6 Food Webs and Energy Flow Practice Tests

A 10-question Grade 6 Science practice test on food chains, food webs, trophic levels, energy pyramids, producers, consumers, decomposers, and energy transfer.

Trace energy through food chains and webs, identify trophic levels, compare energy and matter movement, and use evidence to explain ecosystem changes.

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

What does an arrow in a food chain usually show?

Please select an answer first.

Correct answer: A

The correct answer is The direction that energy moves from one organism to another.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Arrows point from the organism being eaten toward the organism that receives energy by eating it.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Arrows point from the organism being eaten toward the organism that receives energy by eating it.

2. QuestionMultiple choice

Which organism is usually at the first trophic level?

Please select an answer first.

Correct answer: B

The correct answer is A producer such as grass.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Producers form the first trophic level because they introduce energy-rich food into the chain.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Producers form the first trophic level because they introduce energy-rich food into the chain.

3. QuestionMultiple choice

Which food chain is correctly ordered?

Please select an answer first.

Correct answer: C

The correct answer is Grass → grasshopper → frog → hawk.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: The chain begins with a producer and continues through consumers that eat the organism before them.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

The chain begins with a producer and continues through consumers that eat the organism before them.

4. QuestionMultiple choice

What is a food web?

Please select an answer first.

Correct answer: D

The correct answer is A group of connected food chains in an ecosystem.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Food webs show many feeding relationships that overlap in an ecosystem.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Food webs show many feeding relationships that overlap in an ecosystem.

5. QuestionMultiple choice

What is a primary consumer?

Please select an answer first.

Correct answer: A

The correct answer is An organism that eats a producer.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Primary consumers receive energy by eating producers such as plants or algae.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Primary consumers receive energy by eating producers such as plants or algae.

6. QuestionMultiple choice

What is a secondary consumer?

Please select an answer first.

Correct answer: B

The correct answer is An organism that eats a primary consumer.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Secondary consumers receive energy by eating organisms that eat producers.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Secondary consumers receive energy by eating organisms that eat producers.

7. QuestionMultiple choice

Which organism is most likely a producer in a pond food web?

Please select an answer first.

Correct answer: C

The correct answer is Algae.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Algae can use light energy to make food and support other pond organisms.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Algae can use light energy to make food and support other pond organisms.

8. QuestionMultiple choice

Which organism is most likely a decomposer in a forest food web?

Please select an answer first.

Correct answer: D

The correct answer is A fungus growing on dead wood.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Fungi break down dead matter and return materials to the ecosystem.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Fungi break down dead matter and return materials to the ecosystem.

9. QuestionMultiple choice

Why can one organism appear in several food chains?

Please select an answer first.

Correct answer: A

The correct answer is It may eat or be eaten by more than one type of organism..

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Multiple feeding relationships connect chains into a food web.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Multiple feeding relationships connect chains into a food web.

10. QuestionMultiple choice

What is the main source of energy for most ecosystems?

Please select an answer first.

Correct answer: B

The correct answer is The Sun.

  1. Identify the feeding relationship: Find the organism that provides energy and the organism that receives it.
  2. Trace the flow: Most ecosystems receive their initial energy from sunlight captured by producers.
  3. Check the ecosystem effect: Consider how a population change could affect the other organisms and energy available at each level.

Most ecosystems receive their initial energy from sunlight captured by producers.

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Frequently asked questions about Grade 6 Food Webs and Energy Flow

What topics are covered?

The page covers food chains, food webs, arrows, producers, consumers, decomposers, trophic levels, energy pyramids, energy transfer, matter cycling, and population changes.

How should students read a food web?

Begin with a producer and follow each arrow toward the organism that receives energy. Then identify the feeding role and consider how a change could affect connected populations.

How many questions are on this page?

The page includes five mini tests with 10 questions each, for 50 Grade 6 Food Webs and Energy Flow questions in total.