Products of redifferentiation are

Options

A. interfascicular cambium
B. secondary phloem, cork.
C. cork cambium
D. tracheary elements.

Answer

### Step-by-Step Solution:

1. **Understanding Redifferentiation**:
- Redifferentiation is the process by which cells that have previously undergone de-differentiation regain a specific function and structure. This process leads to the establishment of permanent cell types in plants.

2. **Distinguishing Between De-differentiation and Redifferentiation**:
- De-differentiation involves cells reverting to a more primitive state, allowing them to divide and form new cells. In contrast, redifferentiation is when these cells stop dividing and take on specialized functions.

3. **Analyzing the Options**:
- **Option 1: Inter-fascicular Cambium**:
- This is formed from the de-differentiation of parenchyma cells and is not a product of redifferentiation.
- **Option 2: Secondary Phloem and Cork**:
- These are indeed products of redifferentiation, as they are formed from the cambium and become permanent in structure and function.
- **Option 3: Cork Cambium**:
- This is also formed from de-differentiation of parenchyma cells and does not represent redifferentiation.
- **Option 4: Tracheary Elements**:
- These are the result of differentiation, not redifferentiation, as they are specialized cells for transport.

4. **Conclusion**:
- The only correct answer that represents the products of redifferentiation is **Option 2: Secondary Phloem and Cork**.

### Final Answer:
The products of redifferentiation are **Secondary Phloem and Cork**.

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