Botany - Plant Growth and Development Question with Solution | TestHub

Plant growth regulators have various physiological functions in plants.

2,4-D (2,4-Dichlorophenoxyacetic acid) is a synthetic auxin. It is widely used as a herbicide to kill broad-leaved dicotyledonous weeds in cereal crops and lawns, as it does not affect mature monocotyledonous plants.

Gibberellins are used to promote stem elongation and seed germination.

Kinetin is a cytokinin that promotes cell division.

Abscisic acid is a stress hormone that inhibits growth and promotes seed dormancy.