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Question : The bones offorelimbs ofwhale, bat, cheetah and man are similar in structure, because

Answer»

one ORGANISM has given rise to another
they SHARE a common ancestor
they perform the same FUNCTION
the have biochemical similarities

Solution :Organs having same origin but different functions are called homologous organs. For example, whales, bats, Cheetah and human (all mammals) share similarities in the pattern of bones of FORELIMBS. Homology indicates common ancestry.
Option (A) is a basis for theory of BIOGENESIS.
Option (C) is invalid as they are not performing same function.
Option (D) can not be true.


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