What is the role of pericycle in secondary growth of dicot roots?

Explanation

### Step-by-Step Solution

1. **Understanding Pericycle**: The pericycle is a layer of cells located just inside the endodermis of the dicot root. It plays a crucial role in the secondary growth of roots.

2. **Formation of Vascular Cambium**: One of the primary roles of the pericycle in dicot roots is to contribute to the formation of the vascular cambium. The cells in the pericycle can undergo a process called de-differentiation, where they regain the ability to divide.

3. **De-differentiation Process**: During de-differentiation, the permanent tissues in the pericycle revert to a meristematic state, allowing them to divide and form new tissues. This is essential for the development of the vascular cambium.

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