The hormone which reduces transpiration rate by inducing stomatal closure is

Question

The hormone which reduces transpiration rate by inducing stomatal closure is (A) ABA (B) ethylene (C) cytokinin (D) gibberellin

Tardigrade Admin · Accepted Answer

ABA (Absisic acid) is a stress hormone which is synthesised by the plant during drought or other stress conditions. It causes rapid movement of K+ ions out of the guard cells, closes stomatal pores and thus reduces the transpiration rate.

Q. The hormone which reduces transpiration rate by inducing stomatal closure is

$A B A$

ethylene

cytokinin

gibberellin

$A B A$ (Absisic acid) is a stress hormone which is synthesised by the plant during drought or other stress conditions. It causes rapid movement of $K^{+}$ ions out of the guard cells, closes stomatal pores and thus reduces the transpiration rate.