The opening of the guard cells of the epidermis in plants is by the process of? by Sunday | Nov 21 | Biology WAEC | 0 comments A. osmosis B. diffusion C. active transport D. transpiration Correct Answer: Option A A. osmosis Users Also Read These:In a dicotyledonous stem, the zone between the…The process of meiosis in plants ensures the…A major way by which the headquarters guard against…The mechanism of opening and closing of stomata in…The epidermis of a leaf is considered an example of…