Single Choice

Which of the following facilities opening of stomatal aperture?

ALongitudinal orientation of cellulose microfibrils in the cell wall of guard cells
BContraction of outer wall of guard cells
CDecrease n turgidity of guard cells
DRadial orientation of cellulose microfibrils in the cell wall of guard cells
Correct Answer

Solution

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.

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