NTA Abhyas NEET2020BotanyPlant - Growth and DevelopmentPractice
Select incorrect function w.r.t gibberellin.
Options
- AAccelerates cell elongation only under in vitro conditions
- BThey are weakly acidic hormones
- CFirst isolated from the fungus Gibberella fujikuroi
- DThey occur naturally in plants
Correct answer
A. Accelerates cell elongation only under in vitro conditions
Step-by-step solution
Gibberellins are weakly acidic hormones having gibbane ring structure which causes cell elongation of intact plants in general and increased internodal length of genetically dwarfed plants. Gibberellins the natural hormones that were first isolated from the fungus Gibberella fujikuroi ( Fusarium moniliforme ) the causal organism of Bakanae disease or foolish seedling disease of rice plants in Japan by Kurosawa in 1926.