Formation of cork cambium is___(i) ___ while formation of secondary cortex and cork is ____(ii) ___

Options

A. (i) Differentiation (it) Dedifferentiation
B. (i) Dedifferentiation (ii)Redifferentiation
C. (i) Redifferentiation (ii) Dedifferentiation
D. (I)Dedifferentiation(ii) Redifferentiation

Answer

To solve the question regarding the formation of cork cambium and the formation of secondary cortex and cork, we need to understand the processes involved in plant tissue differentiation.

### Step-by-Step Solution:

1. **Understanding Cork Cambium Formation**:
- Cork cambium is a type of lateral meristem that arises from the dedifferentiation of mature parenchyma cells. These parenchyma cells, which are originally differentiated, can revert to a meristematic state and form cork cambium.
- Therefore, the formation of cork cambium is a result of **dedifferentiation**.

2. **Understanding Secondary Cortex and Cork Formation**:
- The secondary cortex and cork are produced from the cork cambium through a process called re-differentiation. After the cork cambium is formed, it gives rise to cork cells (phellem) and secondary cortex (phelloderm) through re-differentiation.
- Hence, the formation of secondary cortex and cork is a result of **re-differentiation**.

### Final Answers:
- (i) Dedifferentiation
- (ii) Redifferentiation