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 male sex cells also called gametes are produced…Choose the option that best complete the gap. The…Animal cells are different from plant cells because…The epidermis of the mammalian skin is an example of…A radio is operated by eight cells each of e.m.f.…