1. Tardigrade
  2. Question
  3. Biology
  4. Opening and closing of stomata is due to the :-

Q. Opening and closing of stomata is due to the :-

 2390  225 AIPMTAIPMT 2002Transport in Plants Report Error

Solution:

During night or dark : CO2 conc. increases in sub-stomatal cavities ---> ABA participation --> K+ ions exchange stopped --> K+ ions transported back into subsidiary cells --> Decreased pH -->Starch synthesized in guard cells --> Decreased O.P of guard cells -->Exosmosis from guard cell --> Stomata close