Which PGR is most likely responsible for the phenomenon observed when a plant bends towards a light source, even if the light source is unidirectional and doesn't illuminate the entire plant?

Which of the following plant hormones would be least effective in increasing the yield of a sugarcane crop by promoting growth?

Farmers often use a specific plant hormone to boost sugarcane yield. This hormone primarily affects which aspect of the plant's growth?

Application of which PGR leads to increased sugar production in sugarcane by promoting stem elongation?

Which plant growth regulator is sprayed on sugarcane crops to increase stem length and yield?