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The vermiform appendix and the coccyx in humans are degenerated, non-functional structures that are well developed in some related animals. What are such organs called?
AHomologous organs
BAnalogous organs
CVestigial organs
DConnecting links
Answer & Solution
Correct answer: C. Vestigial organs
1. Some organs are degenerated and have lost their function in one species but work in related forms.
2. The vermiform appendix and coccyx in humans are such reduced, non-functional structures.
3. These are called vestigial organs.
4. Analogous organs are functional structures of different origin, which rules out option B.
5. So the answer is vestigial organs, option C.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 19 Origin and Evolution of Life "Evidences from Morphology and Anatomy", p.283_
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