Biology 2004 JAMB Past Questions - Question 50: An evidence of the relationship between living organisms and their extinct relatives can best be obtained from

Correct Answer

D

Explanation

D - Palaeontology isthe study of fossils which serves as a guide on the history of life onearth. Fossils are remains or imprints of plants or animals that lived a verylong time which are preserved in snows and some in sedimentary rocks. Fossilsfrom dead organisms showed tha: all living organisms did not arise at the sametime but different species arose at differer times. This means that earlierliving organisms evolved into later organisms. Evidence from embryology showsthat there is relationship between the embryos of certain ar mals (eg allvertebrate embryos) and this : an indication that the embryos come from :common ancestor. Comparative physiology is the study of normal functions ofliving organisms such as DNA, hormones, storage, and use of ATP Comparativeanatomy is the study of the structuralsimilarities (homologous structures) between unrelated organism?.