Question

Which one is not a vestigial organ in man?

• A. Vermiform appendix
• B. Epiglottis
• C. Muscles of ear pinna
• D. Nictitating membrane

Answer 1

The correct option is B

Epiglottis

The correct option is B

Explanation of the correct option :

1. Vestigial organs are those which were once in use by our ancestors but now cannot be used because they are the remains of once-functional organs.
2. The epiglottis is a fully functional structure and functions to stop the entry of food into our windpipe when we swallow our food.
3. It is not considered a vestigial organ.
   

Explanation of the incorrect option:

Option A:

It is a vestigial organ.

Option C:

The human ear pinna is a vestigial organ that was once mobile and employed for sound collection.

Option D

The nictitating membrane is vestigial in humans

Final answer: Epiglottis is not a vestigial organ in man.