Question

Examples of vestigial organs in the human body are `:`
A. Wisdom tooth, coccyx, nail, eyelid and vermiform appendix
B. Wisdom tooth, coccyx, vermiform appendix, pancrease and elbow joint
C. Wisdom tooth, coccyx, vermiform appendix, nictitating membrane and auricular muscles
D. Coccyx, wisdom tooth, nail, auricular muscles

Answer 1

Correct Answer - C
Organs which were functional in ancestors but now these become non-functional are called vestigial organs.
1. Vermiform appendix
2. Muscles of pinna or ear (auricular muscles)
3. Segmental muscles of abdomen
4. Third molars (wisdom teeth)
5. Hairs on body
6. Nictiating membrane (Plica semilunaris)
7. Coccyx or tail vertebrate
In other animals :
1. Hindlimbs and pelvic girdles of phythons
2. Wings of flightless birds (Kiwi)
3. Splint bone in horse (`2^(nd)` and `4^(th)` digits)