Q. Which one of the following generally acts as an antagonist to gibberellins ?
A) Zeatin
B) Ethylene
C) ABA
D) IAA
Explanation
[Solution from source] ABA promotes dormancy and inhibits growth, so it generally opposes gibberellins, which break dormancy and promote germination and elongation. Zeatin (a cytokinin) and IAA (an auxin) are growth promoters. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.