In isobilateral leaf, the number of stomata per unit area are

Options

A. More on upper surface
B. More on lower surface
C. Approximately same on both the surfaces
D. Absent on upper surface

Answer

To solve the question regarding the number of stomata per unit area in an isobilateral leaf, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Leaf Types**:
- First, we need to recognize the types of leaves. Isobilateral leaves have a similar structure on both the upper and lower surfaces, unlike dorsiventral leaves which have stomata primarily on the lower surface.

2. **Identify Stomata Distribution**:
- In isobilateral leaves, stomata are distributed evenly across both the upper and lower surfaces. This is a key characteristic of isobilateral leaves.

3. **Compare with Other Leaf Types**:
- In dorsiventral leaves, stomata are typically found only on the lower epidermis. This is different from isobilateral leaves where stomata are present on both sides.

4. **Conclude the Stomata Count**:
- Since stomata are found on both surfaces of isobilateral leaves, the number of stomata per unit area will be approximately the same on both the upper and lower surfaces.

5. **Select the Correct Option**:
- Based on the above reasoning, the correct answer to the question is option C: approximately the same on both surfaces.

### Final Answer:
The number of stomata per unit area in an isobilateral leaf is approximately the same on both surfaces (Option C).

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