Q. Which of the following hormones does not naturally occur in plants?
A) 2,4-D
B) IAA
C) GA
D) ABA
Explanation
Synthetic auxins are synthetic compounds which cause various physiological responses common to IAA. 2, 4-D (2, 4-dichlorophenoxy acetic acid) is a synthetic auxin and used as a weedicide.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.