Transpiration differs from evaporation in

Options

A. Rate of water loss
B. Transpiration is a physiological process while evaporation is a physical process
C. Transpiration is a physical process while evaporation is a physiological process
D. Frequency of water loss

Answer

**Step-by-Step Solution:**

1. **Define Transpiration and Evaporation:**
- Transpiration is the process by which water is absorbed by plant roots, moves through plants, and is released as water vapor through stomata in the leaves.
- Evaporation is the process where liquid water changes into water vapor and occurs on any free surface, not limited to living organisms.

2. **Identify the Nature of Each Process:**
- Transpiration is classified as a physiological process because it is part of the plant's metabolic activities and occurs within living systems.
- Evaporation is classified as a physical process since it can occur in both living and non-living systems and does not involve metabolic activities.

3. **Compare the Mechanisms:**
- In transpiration, water loss is regulated by the plant's stomata, which can open and close to control water vapor release.
- In evaporation, the process is influenced by environmental factors such as temperature and pressure, and it is not regulated by any biological mechanism.

4. **Conclusion on Differences:**
- Transpiration differs from evaporation primarily in that transpiration is a physiological process specific to living plants, while evaporation is a physical process that can occur anywhere with a free surface.

5. **Final Answer:**
- The key difference is that transpiration is a physiological process, whereas evaporation is a physical process.