Gibberellins are best known for inducing
Afruit ripening only in climacteric fruits
Bclosure of stomata in drought conditions
Cbolting and stem elongation in rosette plants
Dabscission of leaves in autumn
Answer & Solution
Correct answer: C. bolting and stem elongation in rosette plants
Gibberellins cause dramatic stem elongation and bolting (a rapid stem shoot-up before flowering) in rosette plants like cabbage. They were discovered through the foolish seedling disease of rice caused by Gibberella fujikuroi. Fruit ripening is mainly ethylene; drought stomata closure is ABA; abscission is ethylene plus ABA.
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