Which of the following is not a vestigial organ of man?
Correct answer: D. Thumb
- A. Appendix
- B. Coccyx
- C. Wisdom Teeth
- D. Thumb
Explanation
The correct answer is Option D: Thumb. The thumb is not a vestigial organ as it plays a vital role in the dexterity and functionality of the human hand. It allows for gripping and precise movements, which are essential for daily tasks. In contrast, the appendix, coccyx, and wisdom teeth are considered vestigial because they have lost most of their original functions through evolution. The appendix was linked to digestion, the coccyx is a tail remnant, and wisdom teeth were necessary for larger jaws in our ancestors, but these organs are less useful in modern humans.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
Practise Evolution
814 free Evolution MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.