Water potential is measured in terms of

Options

A. Pressure
B. Volume
C. Mass
D. Weight

Answer

**Step-by-Step Text Solution:**

1. **Understanding Water Potential**: Water potential is a measure of the potential energy of water in a system and is crucial for understanding how water moves in plants. It indicates the tendency of water to move from one area to another.

2. **Definition of Water Potential**: Water potential refers to the free energy of water, which influences its movement between different systems. It is essentially the energy available for water to move.

3. **Measurement of Water Potential**: Water potential is measured in terms of pressure. This is important because it helps quantify the force that drives water movement in plants.

4. **Units of Water Potential**: The unit of measurement for water potential is Pascal (Pa). This unit is derived from the pressure exerted by a force of one newton per square meter.

5. **Symbol for Water Potential**: Water potential is commonly denoted by the symbol Ψ (Psi), specifically Ψw for water potential.

**Final Answer**: Water potential is measured in terms of pressure, with its unit being Pascal (Pa), and is denoted by the symbol Ψw.

---