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Evolution — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution3 Marks
Question
Explain adaptive radiation with the help of a suitable example.
✓

Answer

Evolution of different species in a given geographical area starting from a point and literally radiating to other geographical areas habitat is called adaptive radiation.
A number of marsupials each different from other/Tasmanian Wolf/Tiger Cat/Banded Anteater/Marsupial Rat/Kangaroo/Wombat/Bandicoot/Koala/Marsupial mole/Sugar Glider, evolved from an ancestral stock, but all within Australian continent.
Darwin's finches, from original seed, eating features many other forms with altered beaks arose, enabling them to become insectivorous/vegetarian finches on the same (Galapagos) islands.

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