well, we studied the onion cell and it was pretty small... it was kind of like tons of little cells pushed together when we put it under the microscope, and the block was about this (0) big...pretty...
Both Onion and Elodea cells are about the same size. The Onion Cell is smaller in height and longer than Elodea cells, Elodea Cells are taller in height, thick and shorter in length. It is VERY hard...