Lateral roots originate from

Options

A. Epiblema
B. Pericycle
C. Cortex
D. Endodermis

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of a Dicot Root:**
- When dissecting a typical dicot root transversely, several structures can be observed. The outermost layer is called the epiblema, followed by the cortex, endodermis, pericycle, and the vascular tissue (stele).

2. **Identifying the Role of the Pericycle:**
- The pericycle is a layer of cells that surrounds the central vascular cylinder (pith). It plays a crucial role in the formation of lateral roots.

3. **Formation of Lateral Roots:**
- Lateral roots originate from the pericycle. This occurs when the cells of the pericycle begin to divide. The rapid division of these cells leads to the formation of additional layers of cells.

4. **Emergence of Lateral Roots:**
- As the pericycle cells divide, they push through the outer layers of the primary root, resulting in the formation of secondary roots, which are also known as lateral roots.

5. **Function of Lateral Roots:**
- Lateral roots are essential for anchoring the plant in the soil and for the absorption of nutrients, which are vital for the growth and development of the plant.

**Final Answer:**
Lateral roots originate from the pericycle.

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