Plasmolysis will occur when the cell is placed in ....................solution :

Options

A. Hypotonic
B. Hypertonic
C. Isotonic
D. Hypotonic and Isotonic

Answer

**Step-by-Step Solution:**

1. **Understanding Plasmolysis**: Plasmolysis is a process that occurs in plant cells when they lose water, causing the cell membrane to pull away from the cell wall. This typically happens when the cell is placed in a solution that has a higher solute concentration than the cell's cytoplasm.

2. **Identifying Solution Types**:
- **Hypotonic Solution**: A solution with a lower solute concentration compared to the cell's interior. Water moves into the cell, causing it to swell, not plasmolyze.
- **Hypertonic Solution**: A solution with a higher solute concentration compared to the cell's interior. Water moves out of the cell, leading to plasmolysis.
- **Isotonic Solution**: A solution with the same solute concentration as the cell's interior. There is no net movement of water, so plasmolysis does not occur.

3. **Analyzing the Options**:
- **Option 1: Hypotonic** - Incorrect for plasmolysis as the cell takes in water.
- **Option 2: Hypertonic** - Correct, as the cell loses water, leading to plasmolysis.
- **Option 3: Isotonic** - Incorrect, as there is no net water movement.
- **Option 4: Hypotonic and Isotonic** - Incorrect, as neither condition leads to plasmolysis.

4. **Conclusion**: Plasmolysis occurs when the cell is placed in a hypertonic solution.

**Final Answer**: Plasmolysis will occur when the cell is placed in a **hypertonic solution**.

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