Food Web worksheet for learning about ecosystem energy flow and consumer roles.

Let's solve this food web worksheet step by step and explain each answer.

---

1. Select the living things from the food web that are producers:

Producers are organisms that make their own food through photosynthesis (like plants).

- Grass → Yes, it’s a plant and makes its own food.
- Leaves → Yes, they come from plants and perform photosynthesis.

✔ Correct answers:
✔️ Grass
✔️ Leaves

> Note: "Leaves" here likely refers to plant leaves (e.g., from a tree), which are part of the producer category.

✘ Rabbit, blue jay, snake – these are animals and consumers.

---

2. Select the living things from the food web that are primary consumers:

Primary consumers eat producers (plants). They are herbivores.

- Caterpillar → Eats leaves → Herbivore → Primary consumer ✔
- Rabbit → Eats grass → Herbivore → Primary consumer ✔
- Grasshopper → Eats grass → Herbivore → Primary consumer ✔

✘ Hawk, snake → These eat other animals → Not primary consumers.

✔ Correct answers:
✔️ Caterpillar
✔️ Rabbit
✔️ Grasshopper

---

3. Select the living things from the food web that are secondary consumers:

Secondary consumers eat primary consumers (herbivores).

Let’s trace:
- Snake → Eats caterpillar → Caterpillar is a primary consumer → So snake is secondary consumer ✔
- Blue jay → Eats grasshopper → Grasshopper is a primary consumer → Blue jay is secondary consumer ✔
- Hawk → Eats rabbit → Rabbit is a primary consumer → Hawk is secondary consumer ✔

But wait — check if hawk also eats other animals? In the diagram, hawk eats rabbit and possibly blue jay? Let’s see:

From the diagram:
- Hawk eats rabbit and blue jay → But blue jay is a secondary consumer → So hawk is tertiary consumer when eating blue jay.

So:
- Snake → Secondary ✔
- Blue jay → Secondary ✔
- Hawk → Both secondary and tertiary (depending on prey) → But in this context, since it eats rabbit (primary), it is a secondary consumer.

But the question asks for secondary consumers, so:
- Snake: Eats caterpillar → secondary ✔
- Blue jay: Eats grasshopper → secondary ✔
- Hawk: Eats rabbit → secondary ✔

However, owl eats snake and blue jay → both are secondary or higher → owl is tertiary consumer.

✔ Correct answers:
✔️ Blue jay
✔️ Snake
✔️ Hawk

> Note: Some sources consider hawks as secondary or tertiary depending on diet. Here, since it eats rabbit (primary), it qualifies as a secondary consumer.

---

4. Select the living things from the food web that are tertiary consumers:

Tertiary consumers eat secondary consumers.

Look at who eats secondary consumers:
- Owl → Eats snake and blue jay → both are secondary consumers → Owl is tertiary consumer ✔
- Hawk → Eats blue jay → blue jay is secondary consumer → Hawk is tertiary consumer ✔

So:
- Owl → Tertiary ✔
- Hawk → Tertiary ✔ (when eating blue jay)

Others:
- Caterpillar, grasshopper → producers → no
- Blue jay → secondary → not tertiary
- Grasshopper → primary → no

✔ Correct answers:
✔️ Owl
✔️ Hawk

---

5. Which living things do the owl eat?

Look at the arrows pointing to the owl.

In the diagram:
- Arrow from snake → owl
- Arrow from blue jay → owl

So owl eats:
✔ Snake
✔ Blue jay

Other options:
- Rabbit → eaten by hawk, not owl → ✘
- Caterpillar → eaten by snake → not directly by owl → ✘

✔ Correct answers:
✔️ Snake
✔️ Blue jay

---

6. What is eaten by the blue jay?

Look at arrows pointing to blue jay.

From diagram:
- Arrow from grasshopper → blue jay

So blue jay eats:
✔ Grasshopper

Other options:
- Snake → eaten by owl, not blue jay → ✘
- Rabbit → eaten by hawk → ✘
- Owl → predator of blue jay → ✘

✔ Correct answer:
✔️ Grasshopper

---

✔ Final Answers Summary:

#### Producers:
- ✔️ Grass
- ✔️ Leaves

#### Primary Consumers:
- ✔️ Caterpillar
- ✔️ Rabbit
- ✔️ Grasshopper

#### Secondary Consumers:
- ✔️ Blue jay
- ✔️ Snake
- ✔️ Hawk

#### Tertiary Consumers:
- ✔️ Owl
- ✔️ Hawk

#### What does the owl eat?
- ✔️ Snake
- ✔️ Blue jay

#### What is eaten by the blue jay?
- ✔️ Grasshopper

---

This food web shows multiple feeding relationships, with energy flowing from producers → primary consumers → secondary consumers → tertiary consumers. The owl sits at the top as an apex predator.

Let me know if you'd like a simplified version or a diagram explanation!