The following exist as free-living organisms except
Answer Details
Spirogyra is not a free-living organism. It is a type of algae that lives in freshwater environments and forms long, spiral-shaped filaments. The other three options, Amoeba, Chlamydomonas, and Euglena, are all single-celled organisms that are capable of surviving and reproducing on their own, without being attached to a larger organism.