In dicotyledonous roots, the lateral roots originate from

Options

A. Endodermal cells
B. Cortical cells
C. Epidermal cells
D. Pericycle cells

Answer

To answer the question "In dicotyledonous roots, the lateral roots originate from," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of Dicotyledonous Roots**:
- Dicotyledonous plants have a specific root structure that includes a central core known as the stele, surrounded by various layers of cells.

2. **Identify the Layers of the Root**:
- The root consists of several layers: the epidermis (outer layer), cortex (middle layer), and stele (inner layer). The stele contains vascular tissues and is surrounded by the pericycle.

3. **Focus on the Pericycle**:
- The pericycle is a layer of cells located just inside the endodermis and outside the vascular tissues. It plays a crucial role in the formation of lateral roots.

4. **Lateral Root Formation**:
- Lateral roots develop from the pericycle cells. These cells are capable of division and can give rise to new roots that emerge from the main root.

5. **Eliminate Other Options**:
- Endodermal cells are involved in regulating water and nutrient uptake but do not give rise to lateral roots.
- Cortical cells primarily serve as storage and do not contribute to lateral root formation.
- Epidermal cells form the outer protective layer and are not involved in lateral root development.
- Therefore, the only correct answer is that lateral roots originate from the pericycle cells.

### Final Answer:
In dicotyledonous roots, the lateral roots originate from **pericycle cells**.

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