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Define biogeo...

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Define biogeographical evidences. Explain adaptive radiation in Australian marsupials.

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Q. Australian marsupials and placental mammals are suitable examples of adaptive radiation and convergent evolution. Explain giving reasons.

Q. What is adaptive radiation? Explain it with reference to Australian marsupials. Can this fauna indicate its parallel evolution with placental mammals? How do you explain their geographic distribution?

Q. Which of these are examples of evolution by anthropogenic action?
(i) Adaptive radiation of marsupials of Australia.
(ii) Appearance of antibiotic resistant microbes.
(iii) Evolution of finches in Galapagos islands.
(iv) Appearance of dark winged moth in England during post industrialisation period.
(v) Convergent evolution of placental mammals in Australia.

Q. How would you explain the emergence of marsupials in Australia? [2 marks]

Q. (a) Identify any two marsupials from the list given below:
(i) Lemur
(ii) Spotted cuscus
(iii) Flying phalanger
(iv) Bobcat
(v) Tasmanian wolf
(vi) Mole

(b) "Australian marsupials exhibit adaptive radiation." Justify the statement. [2]

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