What is the function of a root hair?

Explanation

### Step-by-Step Solution:

1. **Definition of Root Hairs**:
- Root hairs are small, hair-like structures that extend from the epidermis of the root. They are primarily found in the region of maturation of the root.

2. **Structure of Root Hairs**:
- Root hairs are cylindrical, thin, and usually singular (rarely branched). They can be seen with the naked eye but are sometimes microscopic.

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