State the function of each of the following plant hormones :
(a) Gibberellins
(b) Auxins
(c) Abscisic acid
(a) Gibberlines - They are growth hormones which promote growth of stem
(b) Auxins - It helps plants to grow. Auxin control the growth, development and proliferation of cells in the plant.
(c) Abscisic acid - It inhibits the growth of the plant.