Question

Out of the wing of a bird, wing of an insect and the wing of a bat :
(a) which two are homologous organs?
(b) which two are analogous organs?

Answer 1

(a) The wings of birds and bats are homologous organs, as despite the fact that they have the same basic structure, they perform different functions.
(b) Wings of birds and insects are analogous organs, as their basic structures are different, but they perform the same function (i.e., flying).