Endosmosis takes place when a plant cell is immersed in

Options

A. Isotonic solution
B. Hypotonic solution
C. Hypertonic solution
D. HCL solution.

Answer

To solve the question "Endosmosis takes place when a plant cell is immersed in," we need to understand the concepts of osmosis and the types of solutions.

### Step-by-Step Solution:

1. **Define Endosmosis**: Endosmosis is the process where water moves into a cell from the surrounding solution. This typically occurs when the concentration of solutes is lower outside the cell compared to the inside.

2. **Identify Types of Solutions**:
- **Isotonic Solution**: The concentration of solutes is equal inside and outside the cell. There is no net movement of water.
- **Hypotonic Solution**: The concentration of solutes is lower outside the cell than inside. Water moves into the cell, causing it to swell.
- **Hypertonic Solution**: The concentration of solutes is higher outside the cell than inside. Water moves out of the cell, causing it to shrink.
- **HCl Solution**: This is an acidic solution and is typically hypertonic, which would cause water to move out of the cell.

3. **Determine the Correct Solution**: Since endosmosis involves water moving into the cell, we need a solution where the concentration of solutes is lower outside the cell. This is characteristic of a hypotonic solution.

4. **Conclusion**: Therefore, the correct answer to the question is option B: Hypotonic solution.

### Final Answer:
Endosmosis takes place when a plant cell is immersed in **B. Hypotonic solution**.

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