Question

Which one of the following describes correctly the homologous structures?

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

Answer 1

The correct option is A Organs with anatomical similarities, but performing different functions

Homologous structures are organs with anatomical similarities, but performing different functions. The arm of a human, the wing of a bird or a bat, the leg of a dog and the flipper of a dolphin or whale are homologous structures. They are different and have a different purpose, but they are similar and share common traits.