In dicot root, initiation of lateral root, and vascular cambium during secondary growth takes place from -

Options

A. Cortex
B. Epidermis
C. Pericycle
D. Xylem

Answer

To answer the question regarding the initiation of lateral roots and vascular cambium during secondary growth in dicot roots, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Dicot Roots**:
- Dicot roots have a specific structure that includes various layers such as the epidermis, cortex, and vascular tissues. Each of these layers has distinct functions.

2. **Identifying the Layers**:
- The outermost layer of the root is the epidermis, followed by the cortex, and then the vascular tissues which include xylem and phloem.

3. **Lateral Roots Formation**:
- Lateral roots are formed from the pericycle, which is located just inside the endodermis. The pericycle is a layer of cells that can divide and give rise to new roots.

4. **Vascular Cambium Formation**:
- The vascular cambium, responsible for secondary growth (increasing the thickness of the root), also originates from the pericycle. It forms a ring of meristematic tissue that contributes to the formation of secondary xylem and phloem.

5. **Conclusion**:
- Therefore, both lateral roots and vascular cambium in dicot roots are initiated from the **pericycle**.

### Final Answer:
The initiation of lateral roots and vascular cambium during secondary growth in dicot roots takes place from the **pericycle**.

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