Root hairs are

Options

A. Unicellular branched
B. Unicellular unbranched
C. Multicellular uniseriate
D. Multicellular multiseriate

Answer

**Step-by-Step Solution:**

1. **Definition of Root Hairs**: Root hairs are specialized structures found on the roots of plants. They are primarily responsible for the absorption of water and minerals from the soil.

2. **Structure of Root Hairs**: Root hairs are typically unicellular extensions of the epidermal cells of the root. This means that each root hair is made up of a single cell.

3. **Formation of Root Hairs**: Root hairs originate from the epidermal layer of the root. They are formed as tubular elongations of trichoblast cells, which are the hair-producing cells located in the root's epidermis.

4. **Function of Root Hairs**: The main functions of root hairs include:
- Providing anchorage to the plant in the soil.
- Increasing the surface area for absorption of water and nutrients.

5. **Location of Root Hairs**: Root hairs are predominantly found in the maturation region of the root, where they can effectively absorb water and minerals.

6. **Characteristics of Root Hairs**: While root hairs are primarily unicellular and unbranched, they can occasionally show branching. However, this branching is not common.

7. **Conclusion**: Based on the characteristics and functions of root hairs, they are unicellular structures that extend from the epidermal layer of the root.

**Final Answer**: Root hairs are unicellular extensions of the epidermal cells of the root.

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