Abscisic acid treatment results in

Options

(a) Leaf expansion
(b) Stem elongation
(c) Stomatal closure
(d) Root elongation

Correct Answer:

Stomatal closure

Explanation:

ABA inhibits the H⁺ | K⁺ exchange and promotes the leakage of maleic acid. The reduction of osmotically active solutes would render the guard cells flaccid and keep the stomatal pore closed.