Question

Which of the following is/are example/s of homologous organs?

• A. Forelimbs of a dog and flipper of a whale
• B. Arms of a rabbit and a human
• C. Limbs of a lizard and a crab
• D. Wings of a moth and a bird

Answer 1

Answer: (A), (B)

Arms of a rabbit and a human

Homologous organs are those which have similar structure and origin but different function. Forelimbs of a dog and flippers of whale have similar structure and origin but they serve a different funtion, thus, homologous. Similarly, arms of a rabbit and a human are homologous organs.

Wings of a moth and a bird, although serve a common function, do not share a similar structure and hence analogous. Same is the case with limbs of a lizard and a crab.