Name and state briefly one function each of any three phyto - hormones.

Explanation

(i) Auxin : Promotes cell elongation and division, also helps in the fromation of roots and seedless fruits.
(ii) Gibberellins : These are the hormones that help in the growth of the stem and flower.
(iii) Cytokinins : It promote cell dividio and delay ageing in leaves. It reduces apical dominance and also stimulates the leaf expansion.
(iv) Abscisic acid : It is growth - inhibitor hormone that reverses the growth - promoting effects of auxin and gibberellins. It causes dromancy of seeds, wilting of leaves, closing of stomata and loos of proteins and chlorophyll.
(v) Ethylene : it promotes tranverse growth, alos promotes senescene and abscission of leaves. it acts as an essential hormone for the ripening of fruits.