Educational worksheet for students to learn about ecosystems, including identifying biotic components, consumer types, and animal feeding habits through multiple-choice questions and image-based activities.

Here is the complete solution to the worksheet, with explanations for each answer.

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ACTIVITY 1: Choose the correct option

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1. Which of the following is a biotic component of an ecosystem?
✔ Correct Answer: (c) bacteria

Explanation:
An ecosystem has two main components:
- Biotic = living things (plants, animals, fungi, bacteria, etc.)
- Abiotic = non-living things (soil, water, air, sunlight, temperature, etc.)

Soil, water, and air are abiotic. Bacteria are living organisms — they are microscopic life forms — so they are biotic.

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2. Squirrel, bear and human are examples of _________.
✔ Correct Answer: (c) omnivores

Explanation:
- Herbivores eat only plants (e.g., sheep, cows).
- Carnivores eat only meat (e.g., lions, tigers).
- Omnivores eat both plants and animals (e.g., humans, bears, squirrels).
- Decomposers break down dead matter (e.g., fungi, bacteria).

Squirrels eat nuts, seeds, and sometimes insects or eggs.
Bears eat berries, fish, and small mammals.
Humans eat vegetables, fruits, meat, dairy — everything!
→ All three are omnivores.

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3. Which of the following statements is correct for producers?
✔ Correct Answer: (b) prepare their own food

Explanation:
Producers (like green plants, algae, some bacteria) make their own food using sunlight through photosynthesis. They do not eat other organisms.
- “Meat eaters” → carnivores
- “Plant eater” → herbivores
- “Plant and meat eater” → omnivores

Only producers can create their own food from inorganic materials.

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4. Living things which obtain their food from other living things are termed as ________.
✔ Correct Answer: (a) consumers

Explanation:
- Producers make their own food.
- Consumers eat other organisms (plants or animals) for energy.
- Decomposers break down dead organic matter.
- Prey are animals that are hunted and eaten — but not all consumers are prey (e.g., top predators like lions are consumers but not prey).

So, any organism that eats another living thing is a consumer.

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ACTIVITY 2: Select the correct answer for each animal according to their feeding habits

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1. Sheep
✔ Correct Answer: Herbivore

Sheep eat grass, hay, and other plant material. They do not eat meat.
→ Herbivore

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2. Bear
✔ Correct Answer: Omnivore

Bears eat berries, honey, fish, small mammals, insects — a mix of plants and animals.
→ Omnivore

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3. Spider
✔ Correct Answer: Carnivore

Spiders catch and eat insects and other small animals. They do not eat plants.
→ Carnivore

*(Note: Some spiders may occasionally consume nectar, but they are primarily classified as carnivores because their main diet is animal-based.)*

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4. Monkey
✔ Correct Answer: Omnivore

Monkeys eat fruits, leaves, insects, bird eggs, and sometimes small animals.
→ Omnivore

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5. Cheetah
✔ Correct Answer: Carnivore

Cheetahs hunt and eat gazelles, antelopes, and other herbivores. They are pure meat-eaters.
→ Carnivore

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6. Caterpillar
✔ Correct Answer: Herbivore

Caterpillars (larvae of butterflies/moths) eat leaves, stems, and flowers — plant material only.
→ Herbivore

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✔ FINAL ANSWERS SUMMARY:

Activity 1:
1. (c) bacteria
2. (c) omnivores
3. (b) prepare their own food
4. (a) consumers

Activity 2:
- Sheep → Herbivore
- Bear → Omnivore
- Spider → Carnivore
- Monkey → Omnivore
- Cheetah → Carnivore
- Caterpillar → Herbivore

Let me know if you’d like a printable version or flashcards for review! 🌿🦁