Suction pressure of cell as:

Options

A. Equal to wall pressure
B. Equal to turgor pressure
C. Equal to DPD
D. Osmotic pressure

Answer

### Step-by-Step Solution:

1. **Understanding Suction Pressure**:
- Suction pressure refers to the ability of a cell to absorb water. It is a measure of the negative pressure that develops in the cell due to the osmotic movement of water.

2. **Identifying Related Terms**:
- The question mentions several terms: wall pressure, tugger pressure, DPD (Diffusion Pressure Deficit), and osmotic pressure. It is important to understand how these terms relate to suction pressure.

3. **Defining DPD**:
- DPD, or Diffusion Pressure Deficit, is defined as the difference between the diffusion pressure of pure water and the diffusion pressure of water in the cell. It essentially indicates the water potential of the cell.

4. **Relating Suction Pressure to DPD**:
- Suction pressure is essentially the same as DPD. When a cell has a higher concentration of solutes, it creates a suction effect that draws water in, which is quantified as DPD.

5. **Conclusion**:
- Therefore, the suction pressure of a cell is equal to DPD. The other terms mentioned (wall pressure, tugger pressure, osmotic pressure) are related but do not define suction pressure directly.

### Final Answer:
The suction pressure of a cell is equal to DPD (Diffusion Pressure Deficit).

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