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:One of the differences between plant and animal…A radio is operated by eight cells each of e.m.f.…Choose the option that best complete the gap. The…The mechanism of opening and closing of stomata in…In a dicotyledonous stem, the zone between the…