ReNEET 2026 · Biology · Q110Plant Growth and DevelopmentIn our bank: Exact match · 97%
Which of the following plant growth regulators is used as a herbicide?
- A.2,4-D✓
- B.Kinetin
- C.Abscisic acid
- D.Gibberellin
Correct Answer
(A) 2,4-D
Solution & Explanation
2,4-dichlorophenoxyacetic acid (2,4-D) is a synthetic auxin widely used to kill dicotyledonous weeds — i.e. as a herbicide. Kinetin is a cytokinin; ABA is a growth inhibitor; gibberellin promotes elongation.
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