Almost all plant cells have the ability to produce abscisic acid. one of the functions of abscisic acid in plants is to almost all plant cells have the ability to produce abscisic acid. one of the functions of abscisic acid in plants is to delay leaf senescence. promote stomatal closure during drought stress. regulate development of fruit. stimulate cell elongation.

promote stomatal closure during drought stress.

Explanation:

Abscisic acid inhibits the growth and stomatal opening, specifically when the plants are exposed to some stress conditions. Abscisic acid also regulates the seed maturation and seed dormancy. ABA concentration in leaves increases multiple folds under drought conditions. Its accumulation in leaves promotes closure of stomata and prevents the water loss by transpiration. ABA is required to restore the turgor pressure under drought conditions by stimulation of stomatal closure.