The following exist as free-living organisms except? by Sunday | Sep 5 | Biology JAMB | 0 comments A. Amoeba B. Chlamydomonas C. Euglena D. Spirogyra Correct Answer: Option D – Spirogyra Users Also Read These:The population of different organisms that exist…Micro-organisms which break down dead organisms and…A collection of population of all living organisms…The diagram above is an illustration of organisms in…Which of the following pairs of organisms exist as colonies?