Outer layer of root hair is made up of _________

Options

A. Cellulose
B. Lignin
C. Starch
D. Pectin

Answer

**Step-by-Step Solution:**

1. **Understanding Root Hair Structure**: The root hair is a specialized structure found on the surface of plant roots. Its primary function is to absorb water and nutrients from the soil.

2. **Identifying the Outer Layer**: The question specifically asks about the outer layer of the root hair. To answer this, we need to consider the components that make up the outer layer of root hairs.

3. **Evaluating Options**:
- **Cellulose**: This is a component of the cell wall and provides structural support but is not the outer layer of root hair.
- **Lignin**: This substance adds rigidity and strength to plant tissues but is not found in the outer layer of root hairs.
- **Starch**: This is a storage polysaccharide and is not a structural component of root hairs.
- **Pectin**: This is a polysaccharide that forms the outer layer of root hairs. It provides strength and rigidity, making it suitable for the protective outer layer.

4. **Conclusion**: After evaluating all the options, the correct answer is that the outer layer of root hair is made up of **Pectin**.

**Final Answer**: The outer layer of root hair is made up of **Pectin**.

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