Question

why do we use glycerine while preparing a temporary mount of leaf peel to show stomata

Answer 1

Glycerine is an excellent dehydrating agent.

 It helps to avoid drying of any specimen.

Additionally, it reflects lights properly because of its refractive feature.

It makes image look clearer under your a microscope.

 Due to this, we use glycerine while preparing the temporary mount of leaf peel to show stomata.

Answer 2

Glycerin is hygroscopic in nature and  prevents the  cell to dry up as well as  reduce the formation of air bubbles