The process in which loss of water occurs in the form of water vapour is

Options

A. Respiration
B. Guttation
C. Transpiration
D. Exosmosis

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the process in which water is lost from plants in the form of water vapor.

2. **Analyzing the Options:**
- **A. Respiration:** This is a metabolic process where organisms convert glucose and oxygen into energy, releasing carbon dioxide and water, but it does not primarily refer to the loss of water as vapor.
- **B. Guttation:** This process involves the loss of water in the form of droplets from the edges of leaves, usually occurring at night or early morning, not as vapor.
- **C. Transpiration:** This is the process by which plants absorb water through their roots and then release it as water vapor through small openings in their leaves called stomata.
- **D. Exoosmosis:** This refers to the movement of water out of a cell through a semi-permeable membrane, leading to cell shrinkage, but it does not specifically relate to the loss of water vapor in plants.

3. **Identifying the Correct Answer:**
Among the options, transpiration is the only process that specifically describes the loss of water in the form of vapor from the plant's leaves.

4. **Conclusion:**
Therefore, the correct answer to the question is **C. Transpiration.**

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