Classifying Producers, Consumers, and Decomposers Food Web Worksheet - Free Printable

Solution to the Food Web Worksheet

This worksheet presents a food web diagram and asks you to:
1. Label each organism in the food web.
2. Categorize each organism as a Producer, Consumer, or Decomposer.

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Step 1: Understanding the Terms

- Producers: Organisms that make their own food through photosynthesis (e.g., plants).
- Consumers: Organisms that eat other organisms for energy (e.g., animals).
- Primary Consumers: Eat producers (herbivores).
- Secondary/Higher Consumers: Eat other consumers (carnivores or omnivores).
- Decomposers: Break down dead organisms and waste into nutrients (e.g., fungi, bacteria).

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Step 2: Identify Each Organism in the Diagram

Let’s go through each organism in the food web:

#### Bottom Level (Base of the Food Web)

1. Earthworm – Eats decaying plant matter → Decomposer
2. Mushroom – Fungus that breaks down dead material → Decomposer
3. Fly – Insect that may feed on decaying matter or nectar → Consumer (likely scavenger or herbivore)
4. Grass – Plant → Producer
5. Leaf (from a tree) → Producer
6. Cherry plant with cherries → Producer
7. Flower → Producer

#### Middle Level (Consumers)

8. Butterfly – Feeds on nectar from flowers → Primary Consumer
9. Pigeon – Eats cherries (fruits) → Primary Consumer
10. Duck – Eats grass or insects → Primary/Secondary Consumer
11. Rabbit – Eats leaves/grass → Primary Consumer
12. Snake – Eats smaller animals like birds or mice → Secondary Consumer
13. Hawk – Eats snakes, pigeons, etc. → Tertiary Consumer
14. Fox – Eats rabbits, ducks, etc. → Secondary/Tertiary Consumer

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Step 3: Fill in the Labels in the Diagram

Below are the labels for each blank oval under the corresponding image:

- Earthworm → Decomposer
- Mushroom → Decomposer
- Fly → Consumer
- Grass → Producer
- Leaf → Producer
- Cherry plant → Producer
- Flower → Producer
- Butterfly → Consumer
- Pigeon → Consumer
- Duck → Consumer
- Rabbit → Consumer
- Snake → Consumer
- Hawk → Consumer
- Fox → Consumer

> Note: The arrows show who eats whom. For example:
> - Fly → Grass? No, likely fly eats nectar from flower or decaying matter.
> - Earthworm → Decomposer → feeds on dead plant matter.
> - Mushroom → Decomposer → breaks down dead wood/leaves.
> - Butterfly → Flower → Pollinates and eats nectar.
> - Pigeon → Cherry → Eats fruit.
> - Duck → Grass → Eats aquatic plants.
> - Rabbit → Leaf → Eats vegetation.
> - Snake → Pigeon/Duck/Rabbit → Carnivore.
> - Hawk → Snake/Pigeon → Predator.
> - Fox → Rabbit/Duck → Predator.

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Step 4: Categorize in the Table

Now fill out the table:

| PRODUCERS | CONSUMERS | DECOMPOSERS |
|---------------------|------------------------|------------------------|
| Grass | Pigeon | Earthworm |
| Cherry plant | Duck | Mushroom |
| Flower | Rabbit | |
| Leaf | Snake | |
| | Hawk | |
| | Fox | |
| | Butterfly | |
| | Fly | |

> Note: Fly is a consumer (it eats nectar or decaying matter), but not a decomposer. However, if it feeds on dead things, it might be considered a scavenger. But generally, flies are consumers, not decomposers.

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✔ Final Answer:

#### Labels for Diagram (under each image):

- Earthworm → Decomposer
- Mushroom → Decomposer
- Fly → Consumer
- Grass → Producer
- Leaf → Producer
- Cherry plant → Producer
- Flower → Producer
- Butterfly → Consumer
- Pigeon → Consumer
- Duck → Consumer
- Rabbit → Consumer
- Snake → Consumer
- Hawk → Consumer
- Fox → Consumer

#### Table Completion:

| PRODUCERS | CONSUMERS | DECOMPOSERS |
|---------------------|------------------------|------------------------|
| Grass | Pigeon | Earthworm |
| Cherry plant | Duck | Mushroom |
| Flower | Rabbit | |
| Leaf | Snake | |
| | Hawk | |
| | Fox | |
| | Butterfly | |
| | Fly | |

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🌱 Summary of Key Concepts:

- Producers are at the base: plants (grass, cherry, flower, leaf).
- Consumers include:
- Primary: rabbit, pigeon, duck, butterfly (eat producers).
- Secondary/Tertiary: snake, hawk, fox (eat other animals).
- Decomposers: earthworm, mushroom (break down dead matter).

This food web shows how energy flows from producers → primary consumers → secondary consumers → top predators, with decomposers recycling nutrients back into the soil.

Let me know if you'd like this turned into a printable version or need help drawing arrows!