Question
Stomatal opening in plants occurs due to influx of
Na
K
ABA
Auxins
Solution
B.
K
Opening of stomata is an energy consuming process whereas closing of stomata is not. The turgidity of guard cells is usually controlled by K+, Cl- and H+. The opening of stomata is initiated by excretion of H+ by guard cells, intake of K+ and Cl- and closing is controlled by abscisic acid.
