The chemical nature of gibberellins is

The bioassay for gibberellin is:

Gibberellins can promote seed germination because of their influence on

Which hormone induces $RNA$ synthesis?

Name the plant growth regulator which,upon spraying on sugarcane crop,increases the length of stem,thus increasing the yield of sugarcane crop.

Bolting in plants like beet and cabbage having rosette habits is promoted by