Question

why is glycerine used for mounting of the onion cell or human cheek cell

Answer 1

glycerine is used for mounting onion cell or cheek because if not mounted by glycerine the cell will dry up

Answer 2

We use glycerine for mounting onion feel for expelling bubbles which can be found between slides.Glycerine is a good dried out agent. It avoids the drying of the specimen. Additionally, glycerine has a tendency to reflect light because of its refractive nature.