Which of the following is an example of primary lateral meristem ?

Options

A. Cork cambium
B. Vascular cambium
C. Inter fascicular cambium
D. Intrafascicular cambium

Answer

To determine which of the following is an example of primary lateral meristem, we need to understand the characteristics and functions of primary lateral meristems.

### Step-by-Step Solution:

1. **Understanding Meristems**:
- Meristems are regions in plants where cells are actively dividing, leading to growth. They can be classified into primary and secondary meristems.

2. **Primary vs. Secondary Meristems**:
- Primary meristems are responsible for the primary growth of the plant, which increases the length of the plant. Secondary meristems contribute to secondary growth, which increases the thickness or girth of the plant.

3. **Identifying Primary Lateral Meristems**:
- Primary lateral meristems include the cambium that is involved in the formation of vascular tissues. Specifically, the intrafascicular cambium is a type of primary lateral meristem that forms between vascular bundles.

4. **Examples of Lateral Meristems**:
- The two main types of lateral meristems are:
- **Vascular Cambium**: Responsible for secondary growth but also includes intrafascicular cambium as a primary lateral meristem.
- **Cork Cambium**: Involved in the formation of bark and is part of secondary growth.

5. **Conclusion**:
- The intrafascicular cambium is the correct example of a primary lateral meristem, as it is involved in the primary growth of the plant and is located between vascular bundles.

### Final Answer:
The example of primary lateral meristem is **intrafascicular cambium**.

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