NEET2017BotanyTransport in PlantsActual
Which of the following facilitates opening of stomatal aperture?
Options
- AContraction of outer wall of guard cells
- BDecrease in turgidity of guard cells
- CRadial orientation of cellulose microfibrils in the cell wall of guard cells
- DLongitudinal orientation of cellulose microfibrils in the cell wall of guard cells
Correct answer
C. Radial orientation of cellulose microfibrils in the cell wall of guard cells
Step-by-step solution
Cellulose microfibrils are oriented radially rather than longitudinally which makes easy for the stoma to open. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells, decrease in turgidity of guard cells, contraction of the outer wall of guard cells affect the mechanism of opening and closing of stomata.