Grade-6-Science-Olympiad Basics of Biology Magazine - Free Printable

Let's solve each question step by step based on the diagram of the plant cell provided in the worksheet.

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Question (1): Identify the part labeled "1".

- Looking at the diagram:
- Label "1" points to a green, oval-shaped structure with internal stacks (thylakoids).
- This is characteristic of chloroplasts, which are responsible for photosynthesis in plant cells.

✔ Answer: (A) Chloroplast

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Question (2): Identify the part labeled "2".

- Label "2" points to a large, clear, central structure that takes up most of the cell’s interior.
- This is the vacuole, which stores water, nutrients, and waste products in plant cells.

✔ Answer: (A) Vacuole

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Question (3): Identify the part labeled "3".

- Label "3" points to small, round structures with a double membrane and inner folds (cristae).
- These are mitochondria, the site of cellular respiration.

✔ Answer: (D) Mitochondrion

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Question (4): Identify the part labeled "4".

- Label "4" points to a thin layer surrounding the entire cell, just inside the cell wall.
- This is the cell membrane, which regulates what enters and exits the cell.

✔ Answer: (B) Cell membrane

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Question (5): Identify the part labeled "5".

- Label "5" points to the large, spherical structure with a dark spot inside (nucleolus), containing genetic material.
- This is the nucleus, the control center of the cell.

✔ Answer: (B) Nucleus

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Question (6): What is the function of a Vacuole?

- The vacuole is a storage organelle.
- In plant cells, it maintains turgor pressure, stores water, nutrients, and waste materials.

Let’s evaluate the options:
- (A) Controls traits → That’s the nucleus.
- (B) Control center → Also the nucleus.
- (C) Storage area for food, water, and waste → ✔ Correct!
- (D) Food-producing factory → That’s chloroplasts.

✔ Answer: (C) It provides a storage area for food, water and waste.

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✔ Final Answers:

| Question | Answer |
|--------|--------|
| (1) | A – Chloroplast |
| (2) | A – Vacuole |
| (3) | D – Mitochondrion |
| (4) | B – Cell membrane |
| (5) | B – Nucleus |
| (6) | C – It provides a storage area for food, water and waste. |

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📌 Summary of Key Structures:

- Chloroplast: Green, performs photosynthesis.
- Vacuole: Large central sac for storage.
- Mitochondrion: Powerhouse of the cell.
- Cell membrane: Controls movement in/out of cell.
- Nucleus: Contains DNA; controls cell activities.

This is a plant cell because it has:
- Cell wall
- Chloroplasts
- Large central vacuole

Let me know if you'd like a labeled version or explanation of any other parts!