This is an example for primary meristem involved in secondary growth

Options

A. Apical meristem
B. Cork cambium
C. Fascicular cambium of dicot stem
D. Intercalary meristem

Answer

To answer the question "This is an example of a primary meristem involved in secondary growth," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Meristems**:
- Meristems are regions in plants where cells are actively dividing. They are classified into primary and secondary meristems.
- Primary meristems are responsible for the initial growth of the plant, while secondary meristems contribute to growth in thickness.

2. **Identifying Types of Meristems**:
- The main types of primary meristems include apical meristem, intercalary meristem, and lateral meristem.
- Lateral meristems include vascular cambium and cork cambium, which are involved in secondary growth.

3. **Defining Secondary Growth**:
- Secondary growth refers to the increase in girth or thickness of the plant, primarily through the activity of lateral meristems.
- This growth is significant in woody plants, where it leads to the formation of secondary xylem (wood) and secondary phloem.

4. **Analyzing the Options**:
- **Apical Meristem**: Responsible for primary growth (lengthening).
- **Cork Cambium**: A type of lateral meristem involved in secondary growth but not a primary meristem.
- **Fascicular Cambium**: A type of vascular cambium found in dicot stems and roots, involved in secondary growth.
- **Intercalary Meristem**: Found at the base of leaves or internodes, involved in primary growth.

5. **Selecting the Correct Answer**:
- The question specifically asks for a primary meristem that is involved in secondary growth.
- Among the options, the **Cork Cambium** is a type of lateral meristem that is derived from primary meristematic tissue and is involved in secondary growth.

### Final Answer:
The correct answer is **Cork Cambium**.

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