What are vestigial organs?

Answer 1

Vestigial Organs are of no use or they are functionless to/in our body. Exampples APPENDIX(in colon or rectum), NICITATING MEMBRANE(in our eyes)

Answer 2

See source for more details:
In Charles Darwin’s On the Origin of Species (1859) and his next publication, The Descent of Man (1871), he referred to several “vestiges” in human anatomy that were left over from the course of evolution. These vestigial organs, Darwin argued, are evidence of evolution and represent a function that was once necessary for survival, but over time that function became either diminished or nonexistent.
The presence of an organ in one organism that resembles one found in another has led biologists to conclude that these two might have shared a common ancestor. Vestigial organs have demonstrated remarkably how species are related to one another, and has given solid ground for the idea of common descent to stand on. From common descent, it is predicted that organisms should retain these vestigial organs as structural remnants of lost functions. It is only because of macro-evolutionary theory, or evolution that takes place over very long periods of time, that these vestiges appear.

The term “vestigial organ” is often poorly defined, most commonly because someone has chosen a poor source to define the term. The Oxford English Dictionary (OED) defines vestigial organs as organs or structures remaining or surviving in a degenerate, atrophied, or imperfect condition or form. This is the accepted biological definition used in the theory of evolution.
VR

Answer 3

They are basically useless organs. Your appendix would be an example of a vestigial organ. They are organs that you have in the body that at one time in history served some sort of purpose, but because of our change in diet, etc. they are no longer necessary.

Answer 4

organs/body parts that through the evolutionary process no longer have a purpose, like your tailbone. monkeys have tails, but as they evolved tails became relatively useless that is why we have not tail, but we still have a tail bone because it is in our genes

here is a better way of saying it
# A vestigial organ is an organ whose original function has been lost during evolution

Answer 5

The organs which are non-functional now a days animals but were functional in their ancestors & in related animals are called vestigial organs.in man abt. 100 vestigial organs have been reported inc. the vermiform appendix,nictating membrane,muscles of external ear,wisdom teeth,coccyx,body hair in males etc.other examples are rudimentary pelvic girdle in python& porpoise,rudimentary wings in kiwi & ostrich

Answer 6

Organs that have no use or function, like the appendix.