The rosette habit of cabbage can be changed by the application of

At the onset of seed germination,the digestive enzymes like $\alpha$-amylase are produced by the action of:

In green plants,cell elongation in the internodal regions is caused by which of the following?

$A$ : 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.

During seed germination,the mobilization of stored food is triggered by:

Gibberellins differ from auxins because they produce: