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Biogeography and Continental Drift
Concepts tested here
- Isolation by continental drift
All Questions
2001 AIPMT 1 question
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Occurrence of endemic species in South America and Australia is due to : -Endemic species are found only in a particular region.
South America and Australia separated from the other continents long ago (break-up of Gondwanaland). Their animals and plants were isolated and evolved independently.
For example, Australian marsupials radiated into many forms by adaptive radiation, without competition from placental mammals.
So the endemic species of South America and Australia are due to continental separation.