Which of the following pair has homologous organs ?

Options

A. Pectoral fins of a fish and forelimbs of a horse
B. Wings of a bat and wings of cockroach
C. Air sac of fistf and lungs of frog
D. Wings of a bird and wings of a butterfly

Answer

A

Explanation

Homologous organs are those organs which are originally and anatomically similar but functionally different
The forelimbs of vertebrates are built on same pentadactyl plan, though they may have different functions, e.g. in birds these are modified for flying