CBSE Class 10 Answered

Homologous organs are structures with a common evolutionary origin but not necessarily with a similar function.

For eg -  Human hands, wings of birds and fore limbs of a dog, are homologous. Because during the embryological development all the three of them develop from the same portion of their respective embryos, i.e. they share same origin or ancestry.

Analogous organs are those that perform the same or similar function ; but their origins are not common.

For eg - The wing of a bat, wing of insect and wing of a bird. These perform the same function and structurally appear similar. But their embryological development is vastly different. So they are analogous but not homologous organs.