Cell elongation in internodal regions of green plants takes place due to

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

Which growth hormone is responsible for bolting (internode elongation just prior to flowering)?

Genetic dwarfness can be overcome by treating with

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

The 'Bakane' (foolish seedling) disease of rice seedlings was caused by: