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Question

Find out the mismatched pair from the options given below.

A
Lemur - Flying phalanger
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B
Bobcat - Tasmanian tiger cat
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C
Wolf - Tasmanian wolf
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D
Mouse - Marsupial mouse
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Solution

The correct option is A Lemur - Flying phalanger
The process of evolution of different species in a given geographical area starting from a common ancestor, radiating to other geographical areas, where the new environmental conditions brought about the suitable adaptation in the descendent population is called adaptive radiation. Australian marsupials and placental mammals exhibit adaptive radiation.

Convergent evolution is the independent evolution of similar features in different organisms because they live in similar environments. When more than one adaptive radiation appears to have occurred in an isolated geographical area with different habitats, it can also be referred to as convergent evolution. Australian marsupial and placental mammals demonstrate examples of evolutionary convergence where different groups of organisms resemble each other because they inhabit similar niches (the interrelationship of the organism with biotic and abiotic factors in its environment) in different geographical areas. Examples: Lemur and spotted cuscus show convergent evolution and flying squirrel shows convergent evolution with flying phalanger.

Figure: Convergent evolution of Australian marsupials and placental mammals

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