Q. Which of the following is responsible for opening and closing of stomata?

 1602  190 Transport in Plants Report Error

Solution:

Opening and closing of stomata are controlled by all the factors mentioned in the options. Rise in of guard cells causes hydrolysis of starch and so stomata open, cytokinin and cyclic AMP are required for stomatal opening and abscisic acid stops the ions exchange and is decreased finally leading to closure of stomata.