Q. Which of the following plant growth regulators is used as herbicide?
A) Gibberellin
B) 2,4-D
C) Kinetin
D) Abscisic acid
Explanation
[Solution from source] 2,4-D is a synthetic auxin widely used to kill dicot weeds while sparing monocot crops. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.