The term, `Psi_(p)`, is called pressure potential or

Options

A. Hydrostatic pressure of a solution
B. Osmotic pressure of a solution
C. DPD of a solution
D. Suction pressure of a solution

Answer

To solve the question regarding the term `Psi_(p)`, we need to identify what `Psi_(p)` represents in the context of plant biology. Here’s a step-by-step breakdown of the solution:

### Step 1: Understand the Term `Psi_(p)`
- `Psi_(p)` is known as pressure potential. It is a component of water potential in plants, which is crucial for understanding how water moves through plant tissues.

### Step 2: Identify the Other Options
- The question provides four options:
1. Hydrostatic pressure of a solution
2. Osmotic pressure of a solution
3. DPD (Diffusion Pressure Deficit) of a solution
4. Suction pressure of a solution

### Step 3: Analyze Each Option
- **Hydrostatic Pressure of a Solution**: This is another term for pressure potential. It refers to the pressure exerted by the fluid within a plant cell against the cell wall.

- **Osmotic Pressure of a Solution**: This is the pressure required to prevent the flow of water into a solution across a semi-permeable membrane. It is related but not the same as pressure potential.

- **DPD of a Solution**: DPD stands for Diffusion Pressure Deficit, which is the difference between the diffusion pressure of the solution and that of its solvent. It is also known as suction pressure but does not directly equate to pressure potential.

- **Suction Pressure of a Solution**: This is often used interchangeably with DPD but is not the same as pressure potential.

### Step 4: Conclusion
- After analyzing the definitions and relationships, we conclude that `Psi_(p)` is correctly defined as **Hydrostatic Pressure of a Solution**.

### Final Answer
The term `Psi_(p)` is called pressure potential or **Hydrostatic Pressure of a Solution**.

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