Trichomes take part in

Options

A. Transpiration and exchanges of gases
B. Protection and reduction of transpiration
C. Exudation of water drops
D. Desiccation

Explanation

**Step-by-Step Solution:**

1. **Understanding Trichomes**: Trichomes are small hair-like structures found on the surface of plant leaves and stems. They can be unicellular or multicellular and serve various functions in plants.

2. **Identifying Functions of Trichomes**: The main functions of trichomes include:
- **Protection**: They can deter herbivores and reduce damage from environmental factors.
- **Reduction of Transpiration**: Trichomes can trap moisture and create a humid microenvironment around the leaf surface, which reduces water loss through transpiration.

3. **Analyzing the Options**:
- **Transpiration and Exchange of Gases**: While trichomes can influence transpiration, they are not primarily responsible for gas exchange, which is mainly facilitated by stomata.
- **Exudation of Water Drops**: This function is associated with hydathodes, not trichomes. Hydathodes are specialized structures that exude water.
- **Desiccation**: Trichomes do not have a specific role in desiccation; rather, they help retain moisture.
- **Protection and Reduction of Transpiration**: This option aligns with the known functions of trichomes.

4. **Conclusion**: Based on the analysis of the options, the correct answer is that trichomes take part in **protection and reduction of transpiration**.

**Final Answer**: Trichomes take part in protection and reduction of transpiration.

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