Question

Which of the following facilities opening of stomatal aperture?

• A. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells
• B. Contraction of outer wall of guard cells
• C. Decrease n turgidity of guard cells
• D. Radial orientation of cellulose microfibrils in the cell wall of guard cells

Answer 1

The correct option is D Radial orientation of cellulose microfibrils in the cell wall of guard cells

When the turgidity increases within the two guard cell, the thin outer walls bulge out and stomata opens. the microfibrils in guard cells are made up of cellulose oriented radially rather than longitudinally making it easier for the stomata to open. Thus, the correct answer is option D.