Question

State three differences between homologous and analogous organs and give an example of each.

Differentiate between Homologous and analogous organ.

Write two differences between homologous organs and analogous organs.

Answer 1

Sr. No.	Aspect	Homologous Organs	Analogous Organs
1.	Origin and Structure	Arise from a common embryonic origin and have similar structures, even if functions differ.	Have different embryonic origins and different structures but perform similar functions.
2.	Function	Usually perform different functions in different organisms.	Perform the same or similar functions in different organisms.
3.	Evolutionary Basis	Result of divergent evolution from a common ancestor.	Result of convergent evolution due to adaptation to similar environments or niches.
4.	Examples	Forelimbs of humans (grasping), wings of bats (flying), and flippers of whales (swimming).	Wings of bats (mammals) and wings of insects, which differ structurally but are both used for flying.

Answer 2

Sr. No.	Homologous Organs	Analogous Organs
1.	Those organs that are similar in their structure, morphology, and anatomy but different in their functions are known as homologous organs.	Those organs that are different in their structure, morphology, and anatomy but similar in their functions are called analogous organs.
2.	Inherited from common ancestors.	They are inherited from different ancestors.
3.	They have a similar developmental pattern.	Dissimilar developmental pattern is observed.