Food Web Worksheets Free Printable - Free Printable

Let's solve this Food Web Worksheet step by step.

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🔹 Step 1: Identify and Name the Organisms

We'll name each organism shown in the image:

1. Bird (top left) → Hawk (a predator)
2. Large cat-like animal (top right) → Lion or Cougar (predator)
3. Mouse (left middle) → Mouse
4. Snake (center) → Snake
5. Blue bird (middle right) → Bluebird or Small bird
6. Deer (right side) → Deer
7. Squirrel (bottom left) → Squirrel
8. Grasshopper (center) → Grasshopper
9. Rabbit (center right) → Rabbit
10. Mushroom (bottom left) → Fungus (decomposer)
11. Grass (bottom center-left) → Grass
12. Bush (bottom center) → Shrub
13. Tree (bottom right) → Tree

Now, fill in the blanks with these names.

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🔹 Step 2: Understand Trophic Levels

Let’s classify the organisms based on their role in the food web:

#### ✔ Producers (Autotrophs):
- Grass
- Shrub
- Tree
*(These make their own food via photosynthesis)*

#### ✔ Primary Consumers (Herbivores):
- Rabbit → eats grass/shrubs
- Squirrel → eats nuts, seeds (from trees)
- Deer → eats leaves, grass
- Grasshopper → eats plants
- Mouse → eats seeds, grains (herbivore)

> Note: Some mice are omnivores, but here they’re likely shown as herbivores.

#### ✔ Secondary Consumers (Carnivores that eat herbivores):
- Snake → eats mouse, grasshopper, etc.
- Hawk → eats mouse, rabbit, small birds
- Bluebird → eats insects (like grasshoppers), so secondary consumer
- Fox? Not present. But snake and hawk fit.

#### ✔ Tertiary Consumers (eat secondary consumers):
- Hawk → eats snake, bluebird, mouse
- Lion/Cougar → eats deer, rabbit, squirrel, possibly snake

#### ✔ Quaternary Consumers (top predators):
- Hawk → can be top if no larger predator
- Lion/Cougar → apex predator (eats other carnivores)

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🔹 Now, Answer the Questions:

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① List the names of herbivores in the food chain.

✔ Herbivores are animals that eat only plants.

From the diagram:
- Rabbit
- Squirrel
- Deer
- Grasshopper
- Mouse

> ✔️ Answer: Rabbit, Squirrel, Deer, Grasshopper, Mouse

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② List any two secondary consumers in the food chain.

Secondary consumers eat primary consumers (herbivores).

Examples:
- Snake → eats mice, grasshoppers
- Hawk → eats mice, rabbits, birds
- Bluebird → eats insects (grasshoppers)

> ✔️ Answer: Snake, Hawk (or Bluebird)

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③ List any two quaternary consumers in the food chain.

Quaternary consumers are at the top of the food chain — they eat tertiary consumers.

In this web:
- Hawk → eats snakes, birds, mice → could be tertiary/quaternary depending on diet
- Lion/Cougar → eats deer, rabbits, squirrels, possibly even smaller predators → definitely a quaternary consumer

But note: The hawk may not eat other predators like the lion, so we need to assess who is at the top.

Since the lion is clearly the top predator (no one above it), and the hawk might eat smaller animals including birds and rodents, it's more likely a tertiary consumer.

But if the hawk eats the snake, then it becomes a tertiary consumer.

So, quaternary consumers must eat tertiary consumers.

But in this web, there’s no clear predator of the hawk or lion.

So, both hawk and lion are apex predators, meaning they are quaternary consumers.

> ✔️ Answer: Hawk, Lion (or Cougar)

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✔ Final Answers:

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① Herbivores:
→ Rabbit, Squirrel, Deer, Grasshopper, Mouse

② Secondary Consumers (any two):
→ Snake, Hawk
(or Bluebird, Mouse – but mouse is herbivore; so better: Snake, Bluebird)

> ✔ Best answer: Snake, Hawk

③ Quaternary Consumers (any two):
→ Hawk, Lion

> ✔ These are top predators.

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📝 Summary of Labels (for illustration):

| Image | Name |
|------|------|
| Hawk | Hawk |
| Lion | Lion (or Cougar) |
| Mouse | Mouse |
| Snake | Snake |
| Bluebird | Bluebird |
| Deer | Deer |
| Squirrel | Squirrel |
| Grasshopper | Grasshopper |
| Rabbit | Rabbit |
| Mushroom | Fungus |
| Grass | Grass |
| Bush | Shrub |
| Tree | Tree |

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✔ Completed Worksheet Answers:

1. Herbivores: Rabbit, Squirrel, Deer, Grasshopper, Mouse
2. Secondary Consumers: Snake, Hawk
3. Quaternary Consumers: Hawk, Lion

> 💡 Tip: In real ecosystems, some animals may have multiple roles. This worksheet simplifies them for educational purposes.

Let me know if you'd like a printable version or help drawing arrows in the food web!