Question

Darwins finches represent one of the best example of adaptive radiation, comment

Answer 1

Adaptive radiation is the process of evolution of different species in a given geographical area, starting from a point and radiating to other geographical locations or habitats. Darwin's Finches are the seed-eating songbirds, native to northern hemisphere.
They were used by Darwin to explain adaptive radiation .All the varieties of finches that Darwin observed on the Hawaiian island were evolved on the island itself. Originally there were seed eating varieties from them other forms with altered beak arose in order to make use of other food resources present in the other habitats of Hawaiian island. Thus, this process of evolution of different species in a given area and radiating to other areas (habitats) is adaptive radiation.