NEET 2016 Phase 1 · BiologyGuard cellsPrevious Year Question
Specialized epidermal cells surrounding the guard cells are called:
Answer: (B) Subsidiary cells. Answer: (B) Subsidiary cells.
- A.Complementary cells
- B.Subsidiary cells✓
- C.Bulliform cells
- D.Lenticels
Correct Answer
(B) Subsidiary cells
Solution & Explanation
Answer: (B) Subsidiary cells. Solution: A few epidermal cells in the vicinity of the guard cells become specialised in shape and size; these are the subsidiary cells. Together with the guard cells and the stomatal aperture they form the stomatal apparatus. Complementary cells loosely fill a lenticel, bulliform cells are large empty cells of grass leaves, and lenticels are openings in the bark for gaseous exchange. NCERT Reference: NCERT Class XI, Ch 6 Anatomy of Flowering Plants, p.72, line ~30: "a few epidermal cells, in the vicinity of the guard cells become specialised in their shape and size and are known as subsidiary cells."
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