explain with example how the following …

Homologous Organs : Homologous organs have same origin & anatomical structure but perform different functions. Presence of homologous organs among organisms tells that there existed a common ancestor for them from whom this structure was inherited by them. Homologous organs show the closeness of organisms. The more homologous organs they have, more recently they had a common ancestor. Homologous organs exhibit divergent evolution.

Eg : Forelimb of Humans & Wings of Bat

Analogous Organs : Analogous organs have different origin & anatomical structure but have same function. They exhibit convergent evolution. This means that the organisms evolved from a common ancestor long ago which do not have the organ. Analogous organs were independently developed by the organisms after separation from the ancient ancestor. For instance, birds, insects & bats have evolved from an ancient common ancestor without wings. Their wings were developed separately in each lineage after diverging from ancestor.

Eg : Wings of Bat & Wings of Birds