Distinguish between homologous and analogous organs.

Explanation

Homologous organs:The organs which have similar structure and origin but not necessarily the same function are called homologous organs. The evolutionary pattern that describes the occurrence of similarity in origin and internal structure is called homology. Such organs show, adaptive radiation, hence .divergent evolution., e.g. the appendages of vertebrates such as the flippers of whale, wings of bat, forelimbs of horse, paw of cat-and hand of man, have a common pattern in arrangement of bones eventhough their external form and function may vary to suit their mode of life. It explains that all vertebrates might have had a common ancestor.
Analogous organs, The organs which have dissimilar structure , and origin but perform the same function are called analogous organs. Analogous organs suggest .convergent evolution.. e.g. wings of a butterfly and wings of a bird.