Similarities and differences between organ system and organelle ?
Organ system and Organelle are two completely different things
Firstly, Organ system is macroscopic and made up of many cells while an Organelle is microscopic and is present inside a cell.
Secondly, an organ system is easier to study than an organelle as an organ system is easily visible to the naked eye but to see an organelle, one needs an electron microscope.
Both are not completely different.The only similarity is that both are analogous to each other.Like we cannot survive without an organ system, a eukaryotic cell cannot survive without its organelle although a prokaryotic cell still has ribosomes which perform protein synthesis.