The hormone which was discovered through the 'foolish seedling' disease of rice is

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

Describe the discovery of gibberellins.

Gibberellins promote the formation of $.......$ flowers on genetically $.......$ plants in $Cannabis$,whereas ethylene promotes the formation of $.......$ flowers on genetically $.......$ plants.

Give scientific reasons: Gibberellic acid induces reversal of dwarfism in many genetically dwarf plants.

The size of grape fruits is enlarged by using which of the following plant growth hormones?