Q. The gaseous plant growth regulator is used in plants to:
A) Kill dicotyledonous weeds in the fields
B) Speed up the malting process
C) Promote root growth and root hair formation to increase the absorption surface
D) Help overcome apical dominance
Explanation
[Solution] Ethylene, the gaseous PGR, promotes root growth and root hair formation, increasing the absorption surface. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.