What term describes a body structure that has become significantly reduced or largely lost its original function over the course of evolution, often cited as evidence of an organism’s evolutionary history?

Explanation

A vestigial structure is a body part that has become significantly reduced in size or has largely lost its original functional purpose over the course of evolutionary history, often because the function it once served is no longer particularly necessary for the organism’s survival in its current environment. In humans, structures like wisdom teeth are sometimes cited as examples that may reflect the dietary needs of distant human ancestors more than the needs of most people today. The presence of vestigial structures across various species is often referenced as one among several lines of evidence supporting the broader scientific theory of evolution. Explore more Everyday Science MCQs on mcqstutor to keep practicing.