Q. Which of the following in guard cell is responsible for opening of stomata?
A) Decrease in $CO_{2}$ concentration and more $H^{+}$ ion concentration
B) Decrease in $CO_{2}$ concentration and less $H^{+}$ ion concentration
C) Increase in $CO_{2}$ concentration and more $H^{+}$ ion concentration
D) More free $H^{+}$ ions and less $Cl^{-}$ ions
Explanation
Decrease in $CO_{2}$ concentration and less $H^{+}$ ion concentration is responsible for opening of stomata.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.