Question

Name and explain the evolutionary concept represented in the illustration given above:

Answer 1

Image shows adaptive radiation of marsupials in Australia. Continental drift separated Australia from other continents. The Australian monotremes and marsupials continued to thrive and diversify. Geographical isolation of Australia served as barrier for placental mammals, which arose elsewhere at a later time, from competing with its monotremes and marsupials. Placental mammals evolved in other areas of the world where most monotremes and marsupials became extinct.