Ecosystems and Food Chains Quiz

Grade 4 · Science · Quiz

Test your understanding of ecosystems, food chains, producers, consumers, and decomposers.

Questions

1. What is a producer in a food chain?

   1. An animal that eats plants
   2. A plant that makes its own food using sunlight
   3. An animal that eats other animals
   4. A fungus that breaks down dead things
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   Answer: A plant that makes its own food using sunlight

   Producers are plants (and some algae) that use sunlight to make their own food through a process called photosynthesis.

2. Which of the following is an example of a decomposer?

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

   Mushrooms are decomposers — they break down dead plants and animals and return nutrients to the soil.

3. Energy in a food chain flows from consumers to producers.

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   Answer: False

   Energy flows from producers (plants) to consumers (animals). Plants capture energy from the sun, and that energy moves up the food chain.

4. A hawk eats a snake, which ate a frog, which ate a grasshopper, which ate grass. What is the grass in this food chain?

   1. Primary consumer
   2. Secondary consumer
   3. Producer
   4. Decomposer
   Show answer

   Answer: Producer

   Grass is a plant that makes its own food from sunlight, making it a producer — the starting point of this food chain.

5. What is an ecosystem?

   1. Only the living things in an area
   2. Only the non-living things in an area
   3. All the living and non-living things that interact in an area
   4. A food chain with more than five animals
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   Answer: All the living and non-living things that interact in an area

   An ecosystem includes ALL living things (plants, animals, microbes) AND non-living things (water, air, soil, sunlight) and how they interact.

6. An animal that only eats plants is called a ___.

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   Answer: herbivore

   Herbivores only eat plants. Examples include rabbits, deer, and caterpillars. 'Herb' means plant.

7. Which level of a food chain has the MOST energy available?

   1. Top predator
   2. Secondary consumer
   3. Primary consumer
   4. Producer
   Show answer

   Answer: Producer

   Producers (plants) capture energy directly from the sun, giving them the most energy. Each level up loses about 90% of the energy.

8. A food web shows many food chains connected together.

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   Answer: True

   A food web is a diagram showing how multiple food chains in an ecosystem are connected and overlap.

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