NEET Botany Question (2026) — Solution

Step-by-step solution

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.