Transpiration is a process related to

Options

A. Osmosis
B. Diffusion
C. Activated transport
D. Facilitated diffusin

Answer

**Step-by-Step Solution:**

1. **Understanding Transpiration**: Transpiration is the process by which plants lose water in the form of water vapor. This typically occurs through small openings on the leaves called stomata.

2. **Role of Stomata**: Stomata are crucial for transpiration as they allow water vapor to escape from the plant. They also facilitate the exchange of gases, such as carbon dioxide and oxygen, which are essential for photosynthesis and respiration.

3. **Conditions Affecting Transpiration**: The rate of transpiration can increase with higher temperatures, as warmer conditions can cause more water to evaporate from the leaf surface.

4. **Gaseous Exchange**: During transpiration, when stomata are open, carbon dioxide enters the plant for photosynthesis, and oxygen is released as a byproduct. This exchange of gases occurs primarily through the process of diffusion.

5. **Identifying the Correct Process**: Among the options provided:
- a. Osmosis refers to the movement of water across a semipermeable membrane.
- b. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration.
- c. Active transport involves the movement of substances against a concentration gradient, requiring energy.
- d. Facilitated diffusion is a type of passive transport that requires specific carrier proteins.

6. **Conclusion**: Since transpiration involves the loss of water vapor and the exchange of gases through stomata, which occurs due to the concentration gradient, the process is related to diffusion.

**Final Answer**: The correct option is **b. Diffusion**.

---