Q. Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?
A) Cytokinin
B) Abscisic acid
C) Auxin
D) Gibberellin
Explanation
[Solution by Claude - not from source] Gibberellins increase stem length in sugarcane. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.