DPD is abbreviated form of

Options

A. Daily photosynthetic deficit
B. Daily phosphous deficit
C. Daily pressure deficit
D. Diffusion pressure deficit

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the expanded form of the abbreviation "DPD".

2. **Identifying Possible Options**: The options provided are:
- Daily Photosynthetic Deficit
- Daily Phosphorus Deficit
- Daily Pressure Deficit
- Diffusion Pressure Deficit

3. **Analyzing Each Option**:
- **Daily Photosynthetic Deficit**: This term does not relate to plant transport mechanisms.
- **Daily Phosphorus Deficit**: While phosphorus is important for plants, this term is not commonly used in the context of transport.
- **Daily Pressure Deficit**: This term is vague and does not specifically relate to plant physiology.
- **Diffusion Pressure Deficit**: This term is well-known in plant biology and relates to the movement of water in plants.

4. **Confirming the Correct Answer**: The correct expansion of DPD is "Diffusion Pressure Deficit". This term describes the difference in diffusion pressure between two solutions, particularly the lower diffusion pressure of water in a solution compared to pure water.

5. **Conclusion**: Therefore, the correct answer is "Diffusion Pressure Deficit".

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