Grade 3 Science worksheet identifying producers, consumers, and decomposers with illustrated examples.

Let's solve this worksheet step by step.

Understanding the Concepts:

- Producer: An organism that makes its own food using sunlight (photosynthesis). Usually plants and some bacteria.
- Consumer: An organism that cannot make its own food and must eat other organisms for energy. Animals are consumers.
- Decomposer: An organism that breaks down dead plants and animals, returning nutrients to the soil. Examples include fungi and bacteria.

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Now let’s identify each organism:

1. Grass
→ Grass is a plant that uses sunlight to make its own food via photosynthesis.
✔ Producer

2. Earthworm
→ Earthworms eat decaying plant matter and help break it down in the soil. They consume dead organic material.
✔ Decomposer

3. Elephant
→ Elephants eat plants (like grass and leaves), so they consume producers.
✔ Consumer

4. Mushroom
→ Mushrooms are fungi that absorb nutrients from dead or decaying organic matter.
✔ Decomposer

5. Bacteria
→ Some bacteria decompose dead matter; others may be producers (like cyanobacteria), but in general, many bacteria act as decomposers. In this context, especially since it's paired with mushrooms and earthworms, it's likely referring to decomposer bacteria.
✔ Decomposer

6. Blackberry plant
→ This is a green plant that makes its own food through photosynthesis.
✔ Producer

7. Tiger
→ Tigers are carnivores; they eat other animals.
✔ Consumer

8. Grizzly bear
→ Grizzly bears eat meat, fish, berries, and plants — omnivores. But since they don’t make their own food, they are consumers.
✔ Consumer

9. Acacia tree
→ Trees are plants that produce their own food using sunlight.
✔ Producer

10. Mole snake
→ This seems to be a typo or mislabeling — possibly meant to be "mole" or "snake." Assuming it's a snake (as shown in image), snakes eat other animals like mice, birds, etc. So, they are consumers.
✔ Consumer

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✔ Final Answers:

1. grass – producer
2. earthworm – decomposer
3. elephant – consumer
4. mushroom – decomposer
5. bacteria – decomposer
6. blackberry plant – producer
7. tiger – consumer
8. grizzly bear – consumer
9. acacia tree – producer
10. mole snake – consumer

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✔ Summary:

- Producers: 1, 6, 9
- Consumers: 3, 7, 8, 10
- Decomposers: 2, 4, 5

This worksheet teaches how living things get energy and their roles in an ecosystem. Great job on understanding the food web! 🌱🐍🍄