NEET Biology question

Not in NEET syllabus

Which of the following facilitates the opening of the stomatal aperture?

(A)Decrease in turgidity of guard cells
(B)Radial orientation of cellulose microfibrils in the cell wall of guard cellsCorrect
(C)Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
(D)Contraction of the outer wall of guard cells

Answer: (B)

Solution

Guard cell walls have cellulose microfibrils oriented radially (like the spokes of a wheel) rather than longitudinally. When guard cells become turgid, this radial orientation

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Question ID VK-127842