Gibberellin is

Genetically dwarf plants can be induced to grow tall by using

Bolting may be induced by

Application of which hormone causes the production of male flowers on female plants?

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

The number of gibberellins known till now is