NEET 2017 · BiologyRoot hairsPrevious Year Question
Root hairs develop from the region of
Answer: (A) Maturation. Answer: (A) Maturation.
- A.Maturation✓
- B.Elongation
- C.Root cap
- D.Meristematic activity
Correct Answer
(A) Maturation
Solution & Explanation
Answer: (A) Maturation. Solution: Root hairs are unicellular elongations of the epidermal (epiblema) cells and arise in the region/zone of maturation, where cells have differentiated. The meristematic and elongation zones lie below this and the root cap protects the tip, so none of them bear root hairs. 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."
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