All given tissues are formed as a result of redifferentiation process, except

Options

A. Phellum
B. Phelloderm
C. Secondary xylem
D. Interfascicular cambium

Answer

To solve the question, "All given tissues are formed as a result of redifferentiation process, except," we need to understand the concepts of differentiation, dedifferentiation, and redifferentiation in plant tissues.

### Step-by-Step Solution:

1. **Understanding Differentiation**:
- Differentiation is the process where meristematic tissues (undifferentiated cells) develop into specialized tissues with specific functions. During this process, cells lose their ability to divide.

2. **Understanding Dedifferentiation**:
- Dedifferentiation occurs when differentiated cells regain their capacity to divide. This can happen in certain conditions where cells revert to a meristematic state.

3. **Understanding Redifferentiation**:
- Redifferentiation is the process where dedifferentiated cells lose their division capacity again and become specialized tissues once more. This is a crucial process in the formation of various plant tissues.

4. **Identifying the Tissues**:
- The question lists four tissues: phallum (cork), phalloderm (secondary cortex), secondary xylem, and intrafascicular cambium.
- Phallum (cork) is a protective tissue that does not arise from redifferentiation but is formed from the cork cambium.

5. **Conclusion**:
- Among the listed tissues, phallum (cork) is the one that is not formed as a result of the redifferentiation process. The other tissues (phalloderm, secondary xylem, and intrafascicular cambium) are indeed formed through redifferentiation.

### Final Answer:
The tissue that is not formed as a result of the redifferentiation process is **phallum (cork)**.

---