A negative effect of transpiration is

Options

A. Development of water stress
B. Increase in mineral absorption
C. Maintenance of leaf temperature
D. Causing cooling

Answer

### Step-by-Step Solution:

1. **Understanding Transpiration**:
- Transpiration is the process through which plants lose water in the form of vapor from their aerial parts, primarily through small openings called stomata.

2. **Positive Effects of Transpiration**:
- It helps in cooling the plant, which is beneficial for maintaining optimal temperatures.
- Transpiration creates a suction pressure that aids in the upward movement of water and nutrients from the roots to the leaves.

3. **Identifying Negative Effects**:
- While transpiration has several benefits, excessive water loss can lead to negative effects. One significant negative effect is the development of water stress in the plant.

4. **Conclusion**:
- Therefore, the correct answer to the question "A negative effect of transpiration is" is the **development of water stress**.