In angiosperms, root hairs arise from which one of the following regions of the root?
Answer: (D) The region of maturation. Answer: (D) The region of maturation.
- A.The root cap zone
- B.The region of meristematic activity
- C.The region of elongation
- D.The region of maturation✓
Correct Answer
(D) The region of maturation
Solution & Explanation
Answer: (D) The region of maturation. Solution: Root hairs are unicellular elongations (outgrowths) of the epidermal cells, and they develop in the region of maturation (the maturation/differentiation zone) where epidermal cells differentiate; they are absent in the root cap, meristematic and elongation zones. Their function is to absorb water and minerals from the soil. NCERT Reference: NCERT Class XI, Ch 6 Anatomy of Flowering Plants, p.72, line ~3: "The root hairs are unicellular elongations of the epidermal cells and help absorb water and minerals from the soil." (Root hairs being epidermal outgrowths confirms the epidermal/maturation-zone origin.)