If you observed a cell under a microscope during cytokinesis, how could you tell which type of cell it is?

If you see cell plates forming to meet the cell wall, it's a plant cell. If you see a cell pinching in at the center, it's an animal cell. Plant cells have cell walls that are too rigid to pinch in. It's hard to describe the pinching in but it looks like pulling a drawstring or tightening a belt that keeps getting tighter and tighter until it finally pinches off to make two new cells.