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Q: Which of the following is a vestigial organ?
  • A. Lungs
  • B. Appendix
  • C. Heart
  • D. Kidney
Correct Answer: Option B - Appendix is a vestigial organ. Vestigiality is the retention during the process of evolution of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. 'Useless' body parts, otherwise known as vestigial organs are remnants of lost functions that our ancestors possessed. About 100 recessive organs are found in human beings e.g. Appendix, hair on the skin, caudate veins etc.
B. Appendix is a vestigial organ. Vestigiality is the retention during the process of evolution of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. 'Useless' body parts, otherwise known as vestigial organs are remnants of lost functions that our ancestors possessed. About 100 recessive organs are found in human beings e.g. Appendix, hair on the skin, caudate veins etc.

Explanations:

Appendix is a vestigial organ. Vestigiality is the retention during the process of evolution of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. 'Useless' body parts, otherwise known as vestigial organs are remnants of lost functions that our ancestors possessed. About 100 recessive organs are found in human beings e.g. Appendix, hair on the skin, caudate veins etc.