Function of veins in leaf blade is

Options

A. Exchange of gases
B. Assimilation of food
C. Provide rigidity
D. Transpiration

Answer

To answer the question about the function of veins in the leaf blade, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding Leaf Structure**:
- A leaf is a flattened structure that typically consists of three main parts: the leaf base, petiole, and lamina.
- The lamina is the broad, flat part of the leaf where the veins are located.

2. **Identifying the Role of Veins**:
- Veins are the vascular tissues within the leaf that consist of xylem and phloem.
- They play a crucial role in the transport of water, nutrients, and food materials throughout the leaf.

3. **Functions of Veins**:
- **Rigidity**: The veins provide structural support to the leaf, helping it maintain its shape and resist damage from wind and other environmental factors.
- **Transportation**: They act as channels for the movement of water (from the roots to the leaves) and food (produced during photosynthesis) within the leaf.

4. **Evaluating Options**:
- A. Exchange of gases: This is primarily done through stomata, not veins.
- B. Assimilation of food: This occurs in the chloroplasts during photosynthesis, not directly by veins.
- C. Provide rigidity: This is a primary function of veins, as they support the leaf structure.
- D. Transpiration: While veins help in the process, transpiration mainly occurs through stomata.

5. **Conclusion**:
- The correct answer is **C. Provide rigidity**, as the primary function of veins in the leaf blade is to support the leaf structure and maintain its shape.