What will be zero in a fully turgid cell ?

Options

A. TP
B. WP
C. DPD
D. OP

Answer

To solve the question "What will be zero in a fully turgid cell?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Turgidity**:
- A fully turgid cell is one that is filled with water to the point where the cell membrane presses against the cell wall. This occurs when the cell has taken in enough water to balance the osmotic pressure.

2. **Key Terms**:
- **Diffusion Pressure Deficit (DPD)**: This is the difference between the osmotic pressure (OP) and the turgor pressure (TP) in a cell.
- **Osmotic Pressure (OP)**: The pressure required to prevent the flow of water into a cell due to osmosis.
- **Turgor Pressure (TP)**: The pressure exerted by the fluid (usually water) inside the cell against the cell wall.

3. **The Equation**:
- The relationship between these pressures can be expressed as:
\[ \text{DPD} = \text{OP} - \text{TP} \]
- In a fully turgid cell, the DPD is zero.

4. **Condition for Zero DPD**:
- For DPD to be zero, the osmotic pressure must equal the turgor pressure:
\[ \text{OP} = \text{TP} \]
- This means that the inward osmotic pressure is balanced by the outward turgor pressure.

5. **Conclusion**:
- Therefore, in a fully turgid cell, the **Diffusion Pressure Deficit (DPD)** will be zero.

### Final Answer:
In a fully turgid cell, the **Diffusion Pressure Deficit (DPD)** will be zero.

---