Question

Which one of the following describes correctly the homologous structures ?

• A. Organs that have no function now, but had an important function in ancestors
• B. Organs appearing only in embryonic stage and disappearing later in the adult
• C. Organs with anatomical similarities, but performing different functions
• D. Organs with anatomical dissimilarities, but performing same functions

Answer 1

Answer: (C)

The term homologous was introduced by Richard Owen $(1834)$. Homologous organs are those organs which are similar in origin and basic structure but are adapted differently to perform different functions, eg, forelimb of human and wing of bat.
Forelimb of Hyman