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Evolution
Question
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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

  • Adaptive radiation

  • Natural selection

  • Migration

  • divergent evolution

Answer

A.

Adaptive radiation

The diversification of an ancestral group into two or more species in different habitats is called divergent evolution. When this involves large number of species to occupy different ritches, this is called adaptive radiation. Adaptive radiation is the process of evolution of different species in a given geographical area starting from a species of animals or plants and literally radiating to other areas of geography (habitats). Darwin's finches represent one of best examples of this phenomenon. Australian marsupials are another example of adaptive radiation. 

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