What would be the `Phi_(P)` of a flaccid cell?

Answer

To determine the pressure potential (Φ_P) of a flaccid cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Pressure Potential (Φ_P)**:
- Pressure potential is a component of water potential that refers to the physical pressure exerted by the fluid inside the cell against the cell wall. It is a measure of the pressure that develops in a cell due to the influx of water.

2. **Identify the State of the Cell**:
- A flaccid cell is one that has lost water and is not turgid. In this state, the cell does not exert significant pressure against the cell wall.

3. **Determine the Pressure Potential for a Flaccid Cell**:
- In a flaccid cell, there is no net movement of water into the cell, and therefore, the pressure potential is not positive. Instead, it is effectively zero because there is no pressure being exerted by the cell contents against the cell wall.

4. **Conclusion**:
- The pressure potential (Φ_P) of a flaccid cell is **0 MPa** (megapascals).

### Final Answer:
The pressure potential (Φ_P) of a flaccid cell is **0 MPa**.

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