Excessive loss of water is prevented by

Options

A. Epidermis
B. Endodemis
C. Cortex
D. Xylem

Answer

### Step-by-Step Solution:

1. **Understanding Water Loss in Plants**:
- Plants lose water primarily through a process called transpiration, which occurs mainly through small openings called stomata located on the leaves.

2. **Identifying the Protective Layers**:
- The plant has several layers, including the epidermis, cortex, and endodermis. The outermost layer is the epidermis.

3. **Role of the Epidermis**:
- The epidermis serves as a protective barrier for the plant. It helps to minimize water loss by providing a layer that is less permeable to water.

4. **Function of Stomata**:
- While stomata allow for gas exchange, they can also lead to excessive water loss. The epidermis regulates the opening and closing of stomata to control transpiration.

5. **Conclusion**:
- The excessive loss of water from a plant is primarily prevented by the epidermis, which acts as a barrier to water loss.

### Final Answer:
The correct answer is **epidermis**.

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