Auxins: Apical dominance:: Gibberellins: . . . . . .

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

The gibberellins are plant growth hormones. They cause elongation of stems. Gibberellin was first isolated by Japanese workers from

The rosette habit of cabbage can be changed by inducing stem elongation by the application of.

$A$ : Gibberellic acid increases the yield of malt from barley grain.
$R$ : Gibberellins stimulate the synthesis of amylase,protease and other hydrolytic enzymes for mobilisation of reserve food.

The habit of a cabbage or acaulescent (stemless) plant can be changed drastically by the application of: