What is the true about a monocot leaf?

Options

A. Presence of reticualte venation
B. Absence of bulliform cells.
C. Absence of vascualr bundles
D. Absence of differential mesophyll

Answer

To determine what is true about a monocot leaf, we need to analyze the provided options one by one:

1. **Presence of reticulate venation**:
- Monocot leaves exhibit parallel venation, not reticulate venation. Reticulate venation is characteristic of dicot leaves. Therefore, this statement is **false**.

2. **Absence of bulliform cells**:
- Bulliform cells are specialized cells found in the epidermis of monocot leaves. They help in the folding and unfolding of leaves in response to water availability. Since these cells are present in monocots, this statement is also **false**.

3. **Absence of vesicular bundles**:
- Vesicular bundles, which consist of xylem and phloem, are present in monocot leaves. They are essential for the transport of water, minerals, and food. Hence, this statement is **false**.

4. **Absence of differential mesophyll**:
- In monocot leaves, the mesophyll is generally uniform, lacking the differentiation seen in dicot leaves, which have both palisade and spongy parenchyma. Therefore, this statement is **true**.

Based on this analysis, the correct answer is that monocot leaves have an **absence of differential mesophyll**.

### Summary of the Solution:
- **Option 1**: False (Monocots have parallel venation, not reticulate)
- **Option 2**: False (Bulliform cells are present in monocots)
- **Option 3**: False (Vesicular bundles are present in monocots)
- **Option 4**: True (Monocots have uniform mesophyll)

### Final Answer:
The true statement about a monocot leaf is the **absence of differential mesophyll**.