alleryKurosawa found rice seedlings grew foolishly tall after fungal filtrate. The substance was:
AGibberellic acid
BAbscisic acid
CKinetin powder
DEthylene gas
Answer & Solution
Correct answer: A. Gibberellic acid
1. The fungus Gibberella caused the bakanae disease.
2. Its filtrate made seedlings shoot up.
3. The active substance was gibberellic acid.
_Source: syllabus Biology, Chapter 15, Plant Growth and Development._
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