Formation of which tissue is example of dedifferentation

Options

A. Interfasciclar cambium
B. Apical meristem
C. Intrafascicular cambium
D. Intercalary meristem

Answer

### Step-by-Step Solution:

1. **Understanding Dedifferentiation**:
- Dedifferentiation refers to the process where specialized cells (permanent tissues) regain the ability to divide. This typically occurs when permanent tissues revert to a meristematic state.

2. **Identifying Meristematic Tissues**:
- Meristematic tissues are undifferentiated cells that can divide and give rise to various types of tissues. Examples include apical meristem, intercalary meristem, and cambium.

3. **Analyzing the Options**:
- The options provided are:
- a) Intrafascicular cambium
- b) Apical meristem
- c) Intercalary meristem
- d) Interfascicular cambium

4. **Evaluating Each Option**:
- **Apical Meristem**: Located at the tips of roots and stems, it is a type of meristematic tissue that continuously divides and does not undergo dedifferentiation.
- **Intercalary Meristem**: Found at the base of internodes, it also remains meristematic and does not undergo dedifferentiation.
- **Intrafascicular Cambium**: This is a type of cambium located between vascular bundles. It is a permanent tissue but can undergo dedifferentiation to form secondary xylem and phloem.
- **Interfascicular Cambium**: This cambium is located between vascular bundles and is involved in the formation of secondary growth. It can also undergo dedifferentiation.

5. **Conclusion**:
- The correct answer is **Interfascicular cambium**, as it is the tissue that exemplifies dedifferentiation by regaining the ability to divide and contribute to secondary growth.

### Final Answer:
**Interfascicular cambium** is the tissue that is an example of dedifferentiation.

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