How does chemical coordination occur in plants?

Q. 8 :- How does chemical coordination occur in plants?

 

Answer:- 

Plant hormones play their roles in chemical coordination. Most of the plant hormones promote growth in certain plant parts, e.g. auxin, gibberellins and cytokinin. Abscissic acid is a plant hormone which inhibits growth. Shedding of leaves or ripe fruits is facilitated by abscissic acid.