The rate of transpirator in plants is more when

Options

A. atmosphere is dry
B. temperature is high
C. atmosphere is humid
D. atrrosphere is diy and temperature is high

Answer

**Step-by-Step Solution:**

1. **Understanding Transpiration**: Transpiration is the process by which water vapor is lost from the plant to the atmosphere through small openings called stomata. The rate of transpiration can be influenced by various environmental factors.

2. **Analyzing the Options**:
- **Option A: Atmosphere is dry**: A dry atmosphere means there is less moisture in the air. This increases the water holding capacity of the air, leading to an increase in the rate of transpiration as the plant loses water to the drier air.

- **Option B: Temperature is high**: High temperatures increase the rate of evaporation of water from the plant's surface. As water evaporates more quickly, transpiration rates also increase.

- **Option C: Atmosphere is humid**: A humid atmosphere means there is a lot of moisture in the air. This reduces the water holding capacity of the air, leading to a decrease in the rate of transpiration because the gradient for water vapor loss is reduced.

- **Option D: Atmosphere is dry and temperature is high**: This combines both conditions that favor increased transpiration. A dry atmosphere and high temperature both contribute to a higher rate of water loss from the plant.

3. **Conclusion**: Based on the analysis, the rate of transpiration in plants is more when the atmosphere is dry and the temperature is high. Therefore, the correct answer is **Option D**.

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