Fill in the blanks:The vestigial organ _______ present in the human body is proof of evolution.

Correct Answer:

The vestigial organ Appendix present in the human body is proof of evolution.

 [Extra information:

The appendix is a finger-like tube located in the cecum of the colon (part of the large intestine). It is a vestigial organ. In ancestors, the appendix is used to conduct the digestion of cellulose. But, in humans, due to the absence of cellulase enzyme, cellulose is undigestible, thus the appendix is nonfunctional.]