Which of the following are homologus organs

Options

A. Wings of Birds and Locust
B. Wings of Bat and Butterfly
C. Leg of Cockroach and Frog
D. Wings of Birds and pectoral fins of Fish

Answer

D

Explanation

The organs which have the same fundamental structure and different functions are called homologous organs. Wings of birds and pectoral fins of fish have the same fundamental structure but their functions are different. Wings are used for flying and pectoral fins for swimming.