What happens when a pressure greater than the atmospheric pressure is applied to pure water or a solution?

Explanation

### Step-by-Step Solution:

1. **Understanding Water Potential**: Water potential (Ψ) is a measure of the potential energy in water and is influenced by two main factors: solute potential and pressure potential. It indicates the tendency of water to move from one area to another.

2. **Applying Pressure**: When pressure greater than atmospheric pressure is applied to pure water or a solution, it affects the water potential.

3. **Increase in Pressure Potential**: The application of this pressure increases the pressure potential (Ψp). Pressure potential is the physical pressure exerted by the water against the cell walls of plant cells.

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