Four students A, B, C and D listed the following sets of organs of different organisms as homologous organs. Who was correct ?
A. wings of a bat and wings of a butterfly
B. wings of a pigeon and wings of a bat
C. wings of a pigeon and wings of a butterfly
D. forelimbs of a cow, a duck and a lizard
(a) A (b) B (c) C (d) D
(d) forelimbs of a cow, a duck and a lizard
Because they all have similar structure but different functions, so these organs are homologous.