Which of the following is responsible for rapid loss of water from plant

Options

A. Water vapour saturation deficit
B. Water vapour saturation of air
C. More available soil water to the plant
D. None of the above

Answer

To solve the question "Which of the following is responsible for rapid loss of water from the plant?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Water Loss in Plants**:
- Plants lose water primarily through a process called transpiration. This is the movement of water from the soil through the plant and its evaporation from aerial parts, mainly leaves.

2. **Identifying Factors Affecting Transpiration**:
- Several environmental factors influence the rate of transpiration, including temperature, humidity, wind speed, and light intensity.

3. **Defining Water Vapor Saturation Deficit**:
- The water vapor saturation deficit refers to the difference between the amount of moisture in the air and the maximum amount of moisture the air can hold at a given temperature. This deficit drives the movement of water vapor from the plant to the atmosphere.

4. **Relating Saturation Deficit to Water Loss**:
- A higher water vapor saturation deficit means that the air is drier, which increases the rate of water loss from the plant. When the air can hold more moisture (i.e., it is closer to saturation), the rate of transpiration decreases.

5. **Conclusion**:
- Therefore, the correct answer to the question is that the water vapor saturation deficit is responsible for the rapid loss of water from the plant.

### Final Answer:
- The correct option is **Water vapor saturation deficit**.

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