Q. One of the synthetic auxin is:
A) IAA
B) GA
C) IBA
D) NAA
Explanation
[Solution from source] NCERT states that IAA and IBA have been isolated from plants, whereas NAA (naphthalene acetic acid) and 2,4-D are synthetic auxins. GA is a gibberellin, not an auxin. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.