Q. Guard cells help in:
A) Transpiration
B) Guttation
C) Fighting against infection
D) Protection against grazing
Explanation
[Solution from source] Guard cells open and close the stomatal pore and so regulate transpiration and gaseous exchange. Guttation happens through hydathodes, not stomata. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.