Question

Root hairs develop from

• A. Exodermis
• B. Exodermal cells
• C. Epidermis
• D. Epidermal cells

Answer 1

The correct option is D Epidermal cells

A root hair, or absorbent hair, the rhizoid of a vascular plant, is a tubular outgrowth of a trichoblast, a hair-forming cell on the epidermis of a plant root. In root epidermis, epidermal hairs, termed root hairs are common and are specialized for absorption of water and mineral nutrients. In plants with secondary growth, the epidermis of root and stem is usually replaced by a periderm through the action of a cork cambium.

So, the correct option is D.