Q. "Foolish seedling" disease of rice led to the discovery of
A) ABA
B) 2, 4-D
C) IAA
D) GA
Explanation
[Solution from source] Kurosawa found that rice seedlings infected by the fungus Gibberella fujikuroi grew abnormally tall (bakanae or foolish seedling disease) because of a substance later named gibberellin (GA). IAA was discovered from oat coleoptile experiments and ABA from studies of abscission and dormancy. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.