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Ecosystems Quiz for Grade 6

10 science questions on ecosystems with answers, written for Grade 6. Use it as it is, change any question, print it with an answer key, or give it online and let it grade itself.

1.
What is the primary source of energy for most ecosystems? (Multiple choice)
  1. The sun
  2. Soil nutrients
  3. Water
  4. Wind
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The sun

The sun provides energy through sunlight, which plants use to make food.
2.
Which of the following is a biotic factor in an ecosystem? (Multiple choice)
  1. Temperature
  2. Plants
  3. Sunlight
  4. Water
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Plants

Biotic factors are living parts of an ecosystem, such as plants.
3.
What role do decomposers play in an ecosystem? (Multiple choice)
  1. They produce energy
  2. They break down dead material
  3. They provide shelter
  4. They eat plants
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They break down dead material

Decomposers recycle nutrients by breaking down dead organisms.
4.
All ecosystems have both living and non-living components. (True or false)
  1. True
  2. False
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True

Ecosystems include living things like animals and plants, and non-living things like water and soil.
5.
Animals can survive in an ecosystem without plants. (True or false)
  1. True
  2. False
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False

Animals depend on plants for food or oxygen, so plants are essential.
6.
Name the process by which plants make their own food using sunlight. (Identification)
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Photosynthesis

Photosynthesis is how plants convert sunlight into energy.
7.
The place where an organism lives and gets everything it needs is called its _____ . (Fill in the blank)
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habitat

A habitat provides food, water, shelter, and space for an organism.
8.
Which of these animals is a consumer in an ecosystem? (Multiple choice)
  1. Soil
  2. Grass
  3. Frog
  4. Sunlight
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Frog

Consumers are animals that eat plants or other animals.
9.
Match each term with its correct description. (Matching type)
1. Producer
A. Eats other organisms
2. Consumer
B. Where an organism lives
3. Decomposer
C. Breaks down dead matter
4. Habitat
D. Makes its own food
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1 = Makes its own food; 2 = Eats other organisms; 3 = Breaks down dead matter; 4 = Where an organism lives

These terms describe key parts of an ecosystem.
10.
Give three examples of abiotic factors in an ecosystem. (Enumeration)
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Water, Sunlight, Soil

Abiotic factors are non-living parts like water, sunlight, and soil.