Generally, stomata found on the lower surface of the leaf. Thus the approximate percentage of transpiration through the abaxial surface is

Options

A. 0.47
B. 0.57
C. 0.67
D. 0.97

Explanation

To solve the question regarding the approximate percentage of transpiration through the abaxial surface of a leaf, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Leaf Surfaces**:
- The leaf has two surfaces: the adaxial (upper surface) and the abaxial (lower surface).
- Stomata, which are small openings that facilitate gas exchange and transpiration, are present on both surfaces.

2. **Stomata Distribution**:
- Generally, more stomata are found on the abaxial surface compared to the adaxial surface.
- This is an important factor because the number of stomata directly influences the rate of transpiration.

3. **Transpiration Rate**:
- Since the abaxial surface has a higher density of stomata, it is responsible for a larger percentage of transpiration.
- Research and observations indicate that approximately 97% of transpiration occurs through the abaxial surface.

4. **Conclusion**:
- Therefore, we can conclude that the approximate percentage of transpiration through the abaxial surface of the leaf is 97%.

### Final Answer:
The approximate percentage of transpiration through the abaxial surface is **97%**.

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