Which of the following is not associated with the growth of plants?
(a) Auxin
(b) Gibberellins
(c) Cytokinins
(d) Abscisic acid
Explanation: Abscisic acid is the stress hormone that causes different plant responses acting against stress conditions. It is responsible for the dormancy of seeds and inhibition of seeds. It stimulates the closure of stomata, inhibits shoot growth, stimulates the storage of proteins in seeds, and so on. Hence, (d) is the correct option.