The pioneer organisms in ecological succession are usually the? by Sunday | Sep 11 | Biology JAMB | 0 comments A. mosses B. lichens C. ferns D. algae Correct Answer: Option B – lichens Users Also Read These:Climax communities in a biotic succession are…A good site for secondary succession would be?Micro-organisms which break down dead organisms and…Organisms in an ecosystem are usually grouped…Which of the following is not an outcome of…