(B) Gibberellins $(GA)$ are known to substitute for long photoperiods in many long-day plants to induce flowering. Additionally,$GA$ induces bolting (

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(B) Gibberellins $(GA)$ are known to substitute for long photoperiods in many long-day plants to induce flowering. Additionally,$GA$ induces bolting (internode elongation just prior to flowering) in rosette plants like cabbage and beet,which is exploited commercially to induce early seed production.