Question

Which of the following hormones regulate stomantal colour A) auxins B)
GA C) ABA D) cytokinin

Answer 1

Phytohormones are chemical messengers that coordinate cellular activities. This lecture introduces the plant hormones (auxin, cytokinin, gibberellic acid, brassinosteroids, ethylene, abscisic acid, salicylic acid and jasmonic acid) through their roles, during the plants life, from seed-to-seed

Answer 2

That's my answer
hope it would be useful