Question

Which of the following are homologous organs?

Options

• trunk of an elephant and hand of a chimpanzee

• wing of a bat and wing of an insect

• fish scales and bivalve Mollusca shell

• thorn of Bougainvillea and tendril of Cucurbita

Answer 1

Thorn of Bougainvillea and tendril of Cucurbita

Explanation:

Both are modified stems with the same origin, although they perform different functions, so they are homologous. A bat’s wing and an insect’s wing have different origins, and the other pairs are not homologous organs.