How unicellular organism live without organ system?
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Asked in Genetics
What organism lacks tissues organs and organ system?
Asked in Human Anatomy and Physiology
Which one is largest tissue or organ system or cell or organ or organism?
If you are talking about a single organism... Then the Organism would be the whole, and thus the largest. An Organ System would be next, possibly comprising of multiple individual organs. Then Organ. Tissue typically means a portion of an organ. Cell would be the smallest. Obviously there are unicellular organisms, in which case that would fall to the bottom of the list.