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 which of the plant tissues are guard cells located?The epidermis of a leaf is considered an example of…Choose the option that best complete the gap. The…A radio is operated by eight cells each of e.m.f.…The mechanism of opening and closing of stomata in…