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:The epidermis of a leaf is considered an example of…In which of the plant tissues are guard cells located?A major way by which the headquarters guard against…One of the differences between plant and animal…The process of meiosis in plants ensures the…