Which of the following organisms is one-celled and free-living? by Sunday | Jun 24 | Biology WAEC | 0 comments A. Volvox B. Spirogyra C. Rhizopus D. Chlamydomonas E. Hydra Correct Answer: Option D – Chlamydomonas Users Also Read These:The substances recycled in the soil by the…The association between two organisms in which one…The study which involves the inter-relationship…Which of the following organisms exhibits both plant…Which of the following organisms feeds both…