Ecosystems and Biomes Quiz

Grade 5 · Science · Quiz

Test your knowledge of ecosystems, biomes, and how living things interact with their environment.

Questions

1. What do producers use to make their own food?

   1. Decomposed matter
   2. Other animals
   3. Sunlight and water
   4. Soil minerals only
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   Answer: Sunlight and water

   Producers (plants, algae) use photosynthesis, converting sunlight and water (plus CO2) into sugar for energy.

2. The tundra biome is characterized by frozen ground and very few trees.

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   Answer: True

   Tundra has permafrost (permanently frozen ground), very cold temperatures, and almost no trees.

3. Which organism is a decomposer?

   1. Eagle
   2. Grass
   3. Mushroom
   4. Rabbit
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   Answer: Mushroom

   Mushrooms are fungi and classic decomposers — they break down dead wood and other organic matter.

4. An organism that eats only plants is called an ___.

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   Answer: herbivore

   Herbivores eat only plants (grass, leaves, fruit). Carnivores eat only animals; omnivores eat both.

5. Which biome covers more of Earth's land surface than any other?

   1. Tropical rainforest
   2. Desert
   3. Taiga
   4. Tundra
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   Answer: Taiga

   The taiga (boreal forest) is the world's largest land biome, covering about 17 million square miles across Canada, Russia, and Scandinavia.

6. Abiotic factors include living organisms like plants and animals.

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   Answer: False

   Abiotic means non-living. Plants and animals are biotic (living) factors.

7. What is the main role of decomposers in an ecosystem?

   1. Hunt prey
   2. Produce oxygen
   3. Break down dead matter
   4. Pollinate flowers
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   Answer: Break down dead matter

   Decomposers break down dead plants and animals, recycling nutrients back into the soil for new plant growth.

8. All the living and non-living things in an area, and how they interact, make up an ___.

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   Answer: ecosystem

   An ecosystem includes both biotic (living) and abiotic (non-living) components and all their interactions.

9. Tropical rainforests are found near the poles where it is cold and icy.

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   Answer: False

   Tropical rainforests are near the equator where it is hot and rainy year-round. Polar regions have tundra biomes.

10. A rabbit eating grass is an example of a:

    1. Producer eating a consumer
    2. Consumer eating a producer
    3. Decomposer eating a producer
    4. Abiotic interaction
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    Answer: Consumer eating a producer

    Grass is a producer; the rabbit is a consumer. Consumers get energy by eating other organisms.

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