Question

Select vestigial organs from the following.

• A. Vermiform appendix, wings of bat and coccyx of man.
• B. Vermiform appendix, nictitating membrane and coccyx of man.
• C. Forelimbs of whale, lizard and bat.
• D. Wings of bat, nictitating membrane and wings of insects.

Hint:

Vestigial organs are remnants of features that were functional in an ancestor species but have lost their original function in the modern species.

Answer 1

The Correct Option is B

Step 1: Understanding vestigial organs.
Vestigial organs are those that have lost their original function through evolution but still exist in a reduced form in an organism. In humans, examples include the vermiform appendix, the coccyx, and the nictitating membrane (the remnant of a third eyelid).
Step 2: Analyzing the options.
(A) Vermiform appendix, wings of bat and coccyx of man: Incorrect, the wings of a bat are functional and are not considered vestigial.
(B) Vermiform appendix, nictitating membrane and coccyx of man: Correct, all these are examples of vestigial organs in humans.
(C) Forelimbs of whale, lizard and bat: Incorrect, these are functional limbs adapted to different environments and are not vestigial.
(D) Wings of bat, nictitating membrane and wings of insects: Incorrect, the wings of a bat are functional, and wings of insects are also functional.
Step 3: Conclusion.
The correct answer is (B) Vermiform appendix, nictitating membrane and coccyx of man.