Which of the following is used to break the dormancy of potato tubers?

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

To make stored food available for germination,with which hormone should a seed be treated?

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

All $GAs$ are .............

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