Interfascicular cambium and cork cambium are formed due to

Options

A. Cell division
B. Cell differentiation
C. Cell dedifferentiation
D. Redifferentiation

Answer

To answer the question regarding the formation of interfascicular cambium and cork cambium, we can break it down into a step-by-step explanation:

### Step-by-Step Solution:

1. **Understanding Cambium**: Cambium is a type of meristematic tissue in plants that is responsible for secondary growth. It contributes to the increase in thickness of stems and roots.

2. **Interfascicular Cambium**: This type of cambium is formed between vascular bundles in dicotyledonous plants. During secondary growth, the vascular bundles connect to form a continuous ring of cambium. This process involves the division of cells in the region between the vascular bundles.

3. **Cork Cambium**: Also known as phellogen, cork cambium is a type of cambium that forms the outer protective layer of the plant. It is located between the cortex and the epidermis.

4. **Formation Mechanism**:
- **Cork Cambium Formation**: The cork cambium is formed through the process of cell de-differentiation. This means that mature cells, which typically do not divide, revert to a meristematic state and begin to divide again. This allows the formation of new cells that contribute to the cork layer.
- **Interfascicular Cambium Formation**: The interfascicular cambium is formed due to the cell division that occurs in the region between the vascular bundles during secondary growth.

5. **Conclusion**: Both interfascicular cambium and cork cambium are formed due to cell division, specifically through the process of cell de-differentiation for cork cambium and regular cell division for interfascicular cambium.

### Final Answer:
Interfascicular cambium and cork cambium are formed due to cell division, with cork cambium specifically arising from cell de-differentiation.