The most abundant group of organisms in the animal kingdom is? by Sunday | Sep 8 | Biology JAMB | 0 comments A. Mammalia B. Aves C. Annelida D. Insecta Correct Answer: Option D – Insecta Users Also Read These:What is the probability of producing a child of…The most abundant element on the earth's crust is?Goods that are abundant in supply usually have low?Which of the following is the most abundant in total…The earliest form of life in animal kingdom is the?