NEET 2003 Biology question

Which one of the following describes correctly the homologous structures : -

(1)Organs with anatomical similarities, but performing different functionsCorrect
(2)Organs with anatomical dissimilarities but performing same function
(3)Organs that have no function now, but had an important function in ancestors
(4)Organs appearing only in embryonic stage and disappearing later in the adult

Answer: (1)

Solution

Homologous organs have a common basic anatomical (structural and developmental) plan but may perform different functions because of adaptation to different environments, e.g. forelimbs of human,

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Question ID VK-089264