Which of the following facilitates opening of stomatal aperture ?

Options

A. Contraction of outer wall of guard cells
B. Decreases in tugidity of guard cells
C. Radial crientation of cellulose microfibrils in the cell wall of guard cells
D. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cell

Answer

C

Explanation

Stomata any tiny pore complexes. Each stomata is surrounded by two specialised green epidermal cells called guard cells. The opening of the stoma is facilitated by the orientation of the microfibril in the cell walls of the guard cells. Cellulose microfibrils are oriented radially rether than longitudinally making it easier for the stoma to open.