An example of homologous organs is (a) Our arm and a dog’s foreleg (b) Our teeth and an elephant’s tusks (c) Potato and runners of grass (d) All of the above

Correct answer – (d)

Homologous organs have the same origin as each of the above organs but different functions. Homologous organs can be defined as the organs of various animals having similar basic structures but different functions. For example, a whale’s flippers, a frog’s forelimbs, and a man have the same basic structures but perform different functions, which is why they are called homologous organs.