NEET BIOLOGY

Detailed explanation-1: -Vestigial organs are parts of the body that once had a function but are now more-or-less useless. Probably the most famous example is … the appendix, though it is now an open question whether the appendix is really vestigial.

Detailed explanation-2: -Vestigial structures are often called vestigial organs, although many of them are not actually organs. Such vestigial structures typically are degenerate, atrophied, or rudimentary, and tend to be much more variable than homologous non-vestigial parts.

Detailed explanation-3: -Structures that have no apparent function and appear to be residual parts from a past ancestor are called vestigial structures. Examples of vestigial structures include the human appendix, the pelvic bone of a snake, and the wings of flightless birds.

Detailed explanation-4: -of a body part or organ : remaining in a form that is small or imperfectly developed and not able to function : being or having the form of a vestige (see vestige sense 2) a vestigial tail.

Detailed explanation-5: -The adjective vestigial derives from the Latin word vestigium, meaning “footprint, trace.” It’s most often used in biology to describe something that either didn’t finish developing or has become, through evolution, pretty much useless.