The size of vascualr bundles in a dorsiventral leaf is dependent on

Options

A. Size of lamina
B. Size of veins
C. Number of stomata
D. Number of veins

Answer

To determine the size of vascular bundles in a dorsiventral leaf, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of a Dorsiventral Leaf**:
- A dorsiventral leaf has distinct upper (adaxial) and lower (abaxial) surfaces. It consists of three main parts: epidermis, mesophyll, and vascular system.

2. **Identify the Components of the Vascular System**:
- The vascular system in leaves includes vascular bundles, which are composed of xylem and phloem. These bundles are often found in the veins of the leaf.

3. **Consider the Options Provided**:
- The options given are: size of lamina, size of veins, number of stomata, or number of veins.

4. **Analyze the Role of Each Option**:
- **Size of Lamina**: While the lamina's size may influence overall leaf function, it does not directly determine the size of vascular bundles.
- **Size of Veins**: The size of the veins is crucial as it directly correlates with the thickness of the vascular bundles. Thicker veins will have larger vascular bundles.
- **Number of Stomata**: Stomata are involved in gas exchange but do not affect the size of vascular bundles.
- **Number of Veins**: While the number of veins can indicate overall leaf structure, it does not directly influence the size of individual vascular bundles.

5. **Conclusion**:
- Based on the analysis, the size of the vascular bundles in a dorsiventral leaf is dependent on the **size of veins**. This is because the thickness of the veins varies, which in turn affects the size of the vascular bundles associated with them.

### Final Answer:
The size of vascular bundles in a dorsiventral leaf is dependent on the **size of veins**.

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