Suction pressure is the other name of

Options

A. diffusion pressure deficit
B. osmotic pressure
C. wall pressure
D. turgor pressure

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the other name of "suction pressure". We need to identify which of the given options is synonymous with suction pressure.

2. **Analyzing the Options**:
- **Option A: Diffusion Pressure Deficit (DPD)**: This term is often used in plant physiology and relates to the difference between the diffusion pressure of water in the soil and that in the plant.
- **Option B: Osmotic Pressure**: This refers to the pressure required to prevent the flow of water across a semipermeable membrane. It is related but not the same as suction pressure.
- **Option C: Turgor Pressure**: This is the pressure exerted by the fluid in the central vacuole against the cell wall. It is a result of water entering the cell but is not synonymous with suction pressure.
- **Option D: Valve Pressure**: This term does not relate to suction pressure in any biological context.

3. **Identifying the Correct Answer**: Among the options, "Diffusion Pressure Deficit" (Option A) is recognized as the other name for suction pressure.

4. **Historical Context**: The term "Diffusion Pressure Deficit" was coined by B.S. Mayer in 1938, and it was originally described as suction pressure by Renner in 1915.

5. **Conclusion**: Therefore, the correct answer to the question "Suction pressure is the other name of" is **A: Diffusion Pressure Deficit**.

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