The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as ?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called ?
(d) Name the organs like R and S. Also name the animals which have such organs.

Answer

(a) Analogous organs (b) Wings ; Insect and Bird (c) Homologous organs (d) Forelimbs ; Lizard and Frog