Question

what is cell ? what variation do the cells of organisms show

Answer 1

Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms. At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion.

Answer 2

the structural and functional unit of life is known as cell..............but the type of the cell varies in each organisms.. some are Eukaryotic cells and some are prokaryotic