Class 12th Biology 2016 Set3 Outside Delhi Board Paper Solution

Question 13

How do homologous organs represent divergent evolution ? Explain with the help of a suitable example.

Answer

Organs with similar strucuture, same ancestry, anatomically same and same origin developed along different directions due to adapation and different needs , to perform different functions

For example the fore limbs of some animals (Vertebrates) like whales , bats , cheetah and human have similar anatomical strucuture (i.e. humerus , radius , ulna, carpals,metacarpals and phalanges) develop differently to meet different needs and to perform different functions (any other correct example)