Question

Distinguish between homologous organs and analogous organs. In which category would you place wings of a bird and wings of a bat? Justify your answer giving a suitable reason.(Delhi - 2012)

Answer 1

Homologous organs - Those organs which are same in structure and origin but perform different functions are called homologous organs.

E.g. Forelimbs of frog,lizard and man.

☆Analogous organs - Those organs which are different in structure and origin but perform similar functions are called analogous organs.

E.g. Wings of insect , bat and birds.

☆Wings of bird and wings of bat will be placed in the category of Analogous organs because the structure of the wings of birds and bat is different but they both perform same functions that is they both help to fly.

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