The opening of the guard cells of the epidermis in plants is by the process of? By: Sunday|Published on: Nov 21|Categories: Biology WAEC| 0 comments A. osmosis B. diffusion C. active transport D. transpiration Correct Answer: Option A A. osmosis Users Also Read These:In which of the plant tissues are guard cells located?Green plants lose water to the atmosphere through…The male sex cells also called gametes are produced…The mechanism of opening and closing of stomata in…The epidermis of the mammalian skin is an example of…SEE ALSO Which of the following statements is not true of population?