Biotic or Abiotic worksheet - Free Printable

Let's solve this worksheet step by step.

---

Understanding the Concepts:

- Biotic factors are living components of an ecosystem. These include plants, animals, fungi, bacteria, etc.
- Abiotic factors are non-living components of an ecosystem. These include sunlight, water, soil, temperature, rocks, air, etc.

We need to classify each item listed as either biotic (B) or abiotic (A).

---

List of Items with Classification:

1. Sun – Abiotic (non-living; provides energy) → A
2. Leaves – Biotic (part of a plant, living tissue) → B
3. Shrub – Biotic (a living plant) → B
4. Trunk of the tree – Biotic (part of a living tree) → B
5. Rat – Biotic (an animal, living organism) → B
6. Clouds – Abiotic (made of water vapor, non-living) → A
7. Rain – Abiotic (water falling from clouds, non-living) → A
8. Lynx – Biotic (a living animal) → B
9. Soil – Abiotic (though it may contain organisms, soil itself is non-living material) → A
10. Bush – Biotic (a living plant) → B
11. Rabbit – Biotic (living animal) → B
12. Stones – Abiotic (non-living rock materials) → A

---

Now, Labeling the Diagram:

In the image, numbers 1–12 correspond to parts of the environment. We'll label each with A for abiotic or B for biotic based on the above:

| Number | Element | Classification |
|--------|----------------------|----------------|
| 1 | Sun | A (abiotic) |
| 2 | Leaves (on tree) | B (biotic) |
| 3 | Shrub (small tree) | B (biotic) |
| 4 | Trunk of the tree | B (biotic) |
| 5 | Rat | B (biotic) |
| 6 | Clouds | A (abiotic) |
| 7 | Rain | A (abiotic) |
| 8 | Lynx | B (biotic) |
| 9 | Soil | A (abiotic) |
| 10 | Bush | B (biotic) |
| 11 | Rabbit | B (biotic) |
| 12 | Stones | A (abiotic) |

---

✔ Final Answer:

Fill in the blanks:

1. A sun
2. B leaves
3. B shrub
4. B trunk of the tree
5. B rat
6. A clouds
7. A rain
8. B lynx
9. A soil
10. B bush
11. B rabbit
12. A stones

---

📌 Explanation:

- Living things like animals (rat, lynx, rabbit), plants (leaves, shrub, tree trunk, bush) are biotic.
- Non-living things like sun, clouds, rain, soil, and stones are abiotic, even if they support life.

This classification helps us understand how ecosystems function — both living and non-living parts interact to create a balanced environment.

Let me know if you'd like this turned into a printable answer sheet!