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Question

Identify the features of homologous organs-

(a) Different by structure but identical by origin and function

(b) Different by origin and function but identical by structure

(c) Different by origin but identical by structure and function

(d) Identical by origin and structure but different by function

WBBSE Class X Life Science 04 (a) Evolution 01 Mark 2023

Answer

(d) Identical by origin and structure but different by function

Explanation

Homologous organs are similar in basic structure and embryonic origin but perform different functions in different species. For example, the forelimbs of a human, wing of a bat, and flipper of a whale have the same underlying bone structure and origin, yet they serve different purposes like grasping, flying, and swimming respectively.

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