Plasmolysis occurs when the cell is placed in

Options

A. isotonic solution
B. hypotonic solution
C. Hypertonic solution
D. none of the above .

Answer

### Step-by-Step Solution:

1. **Understanding Plasmolysis**:
- Plasmolysis is a phenomenon that occurs when a plant cell loses water due to osmosis. This typically happens when the cell is placed in a solution that has a higher concentration of solutes compared to the inside of the cell.

2. **Identifying the Type of Solution**:
- When a cell is placed in a hypertonic solution (a solution with a higher concentration of solutes), water moves out of the cell to the surrounding solution. This is because water moves from an area of lower solute concentration (inside the cell) to an area of higher solute concentration (the hypertonic solution).

3. **Effect on the Cell**:
- As water leaves the cell, the cell shrinks and the plasma membrane pulls away from the cell wall. This process is known as plasmolysis.

4. **Conclusion**:
- Therefore, plasmolysis occurs when a cell is placed in a hypertonic solution.

### Final Answer:
Plasmolysis occurs when the cell is placed in a **hypertonic solution**.

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