Which of the following organisms is one-celled and free-living? By: Sunday|Published on: Jun 24|Categories: Biology WAEC| 0 comments A. Volvox B. Spirogyra C. Rhizopus D. Chlamydomonas E. Hydra Correct Answer: Option D – Chlamydomonas Users Also Read These:A group of organisms of the same species living in a…Organisms living in an estuarine habitat are adapted to?An example of homeostasis in living organisms is?Which of the following factors is not a source of…An association between living organisms in which one…SEE ALSO Which of the following is not a constituent of blood plasma?