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: Hawks may not always be quaternary, but in this context, since they eat snakes (secondary) and small birds (secondary), they are tertiary.

The lion/cougar is clearly a quaternary consumer, and possibly hawk if it eats other predators.

But let’s clarify:

- Lion/Cougar → eats deer (primary), rabbit (primary), squirrel (primary), and possibly snake (secondary) → so it eats up to secondary → makes it tertiary?
- But if it eats hawks or other carnivores, then it becomes quaternary.

Since no direct predator of lion/hawk is shown, both are likely top-level.

So:
- Lion/Cougar → quaternary consumer
- Hawk → tertiary or quaternary

But for safety, we can say:

> ✔️ Answer: Lion (or Cougar), Hawk

(Both are top predators; the lion is more likely a quaternary consumer.)

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✔ Final Answers:

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

② Secondary Consumers:
Snake, Hawk (or Bluebird)

③ Quaternary Consumers:
Lion (or Cougar), Hawk

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🧩 Bonus: Completing the Food Web Illustration

You should draw arrows from prey to predator (→ means "is eaten by").

Example connections:

- Grass → Rabbit → Hawk
- Grass → Mouse → Snake → Hawk
- Tree → Squirrel → Hawk
- Grass → Grasshopper → Bluebird → Hawk
- Tree → Deer → Lion
- Bush → Rabbit → Lion
- Grass → Mouse → Lion

And decomposers like mushroom (fungus) break down dead matter.

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✔ Summary:

| Organism | Role |
|----------------|--------------------|
| Grass, Shrub, Tree | Producers |
| Rabbit, Squirrel, Deer, Grasshopper, Mouse | Primary Consumers (Herbivores) |
| Snake, Bluebird, Hawk | Secondary Consumers |
| Hawk, Lion/Cougar | Tertiary/Quaternary Consumers |

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Let me know if you'd like a labeled version of the food web!