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:The association between two organisms in which one…The substances recycled in the soil by the…An ecological succession often leads to?Which of the following is not an outcome of…A good site for secondary succession would be?