Which of the following are the correct examples of adaptive radiation?

(a) Flying squirrel and flying phalanger

(b) Darwin’s finches

(c) Sugar glider and koala

(d) Lemur and spotted cuscus

This process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography (habitats) is called adaptive radiation. Darwin’s finches represent one of the best examples of this phenomenon. Australian marsupials of different types (e.g., sugar glider and koala) also exemplify adaptive radiation. Flying squirrel (placental mammal) and flying phalanger (marsupial) exemplify convergent evolution. Lemur (placental mammal) and spotted cuscus (marsupial) with similar adaptation exemplify convergent evolution.