Question
Leaf abscission is caused by
ABA
cytokinin
auxin
gibberellin
Solution
A.
ABA
Abscission is the fall of leaves and fruits. Abscisic acid (ABA). a stress hormone, accelerated leaf abscission in cotton plants. Since, then it is believed that cause of abscission is the presence of growth inhibiting hormone (ABA), but its universal role for abscission is yet to be established.
