The phenomenon of water moving out of cell an plasma membrane shrinking from the cell wall is :

Options

A. Plasmolysis
B. Exosmosis
C. Hydrolysis
D. Endomosis

Answer

To solve the question regarding the phenomenon of water moving out of a cell and the plasma membrane shrinking from the cell wall, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The question describes a situation where water is leaving the cell, causing the plasma membrane to pull away from the cell wall. This indicates a loss of water from the cell.

2. **Identifying the Solution Type**:
- When a cell is placed in a solution that has a higher concentration of solutes compared to the inside of the cell, it is referred to as a hypertonic solution. In this scenario, the external solution has more solute than the cell's internal environment.

3. **Movement of Water**:
- Water moves from an area of lower solute concentration (inside the cell) to an area of higher solute concentration (outside the cell) to achieve equilibrium. This process is driven by osmosis.

4. **Consequences of Water Loss**:
- As water exits the cell, the cell loses turgor pressure, leading to the plasma membrane detaching from the rigid cell wall. This phenomenon is specifically known as plasmolysis.

5. **Conclusion**:
- Therefore, the correct answer to the question is **Plasmolysis**, as it describes the process where water moves out of the cell, causing the plasma membrane to shrink away from the cell wall.

### Final Answer:
The phenomenon of water moving out of the cell and the plasma membrane shrinking from the cell wall is called **Plasmolysis**.

---