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Please explain with example,’ When more than one adaptive radiation appeared to have occured in an isolated geographical area( representing different habitats), one can call this convergent evolution’.

Please explain with example,’ When more than one adaptive radiation appeared to have occured in an isolated geographical area( representing different habitats), one can call this convergent evolution’.

Grade:12th pass

2 Answers

Arun
25750 Points
5 years ago

A number Australian marsupials and placental mammals each different from the other have evolved from an ancestral stock with in Australian island continent. 

This is a type of convergent evolution, because more than one adaptive radiation occurred in isolated geographical area.

Detailed answer:

Australian marsupials and placental mammals. A number of marsupials, each different from the other evolved from an ancestral stock, but all within the Australian island continent. Placental mammals in Australia also exhibit adaptive radiation in evolving into varieties of such placental mammals each of which appears to be 'similar' to a corresponding marsupial (e.g., Placental wolf and Tasmanian wolf). 

Convergent evolution : This is because, more than one adaptive radiation has occurred in isolated geographical area.

Ayesha Jabin
14 Points
5 years ago
Dear student, I'll help you out here.
Say an organism has been born in an area and has developed special features or adaptations while moving from that area to another, we call this adaptive radiation. 
Now if different organisms have had adaptive radiation and they meet in a geographical area and make a family type relation, we call this convergent evolution. 
For example , birds, insects etc are seen everyday in our scociety and have wings but they are different because they are different groups of organisms and have developed wings to fly.
This was an example to help you understand the concept. You may find other interesting examples as well.

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