The cambium is an example of

Options

A. Lateral meristem
B. Intercalary meristem
C. Apical meristem
D. Primary meristem

Explanation

**Step-by-Step Solution:**

1. **Understanding Cambium**: Cambium is a type of tissue found in plants that is responsible for secondary growth. It is a layer of meristematic cells that can divide and differentiate into various types of cells.

2. **Types of Meristematic Tissues**: There are three main types of meristematic tissues in plants:
- **Apical Meristem**: Located at the tips of roots and shoots, responsible for primary growth.
- **Intercalary Meristem**: Found at the base of leaves or internodes, also involved in primary growth.
- **Lateral Meristem**: Located along the sides of stems and roots, responsible for secondary growth.

3. **Identifying Cambium**: Cambium is classified as a lateral meristem because it contributes to the increase in the girth of the plant. It produces secondary xylem (wood) and secondary phloem (bark).

4. **Conclusion**: Since cambium is a type of lateral meristem that facilitates secondary growth in plants, it is considered a secondary meristem.

5. **Final Answer**: The cambium is an example of a lateral meristem.