Question

Define vestigial organs . Write names of some vestigial organs in human body and write the name of those animals in whom same organs are functional​

Answer 1

Answer:

The organs present in the body which is non-functional and is incompletely developed are vestigial organs.

The examples of vestigial organs - Wisdom teeth, vermiform appendix, ear muscles, coccyx, caecum, nictitating membrane etc., in human.

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Answer 2

Answer:

Vestigial organs is a term used for organs which are degenerated, underdeveloped or useless for an organism. Usually, with the changes in the outer environment, the organs undergo a gradual change in order to cope up with those changes. Presence of vestigial organs is an indication that they were useful for our ancestors but as we evolved with the changing surroundings, these structures lost their functionality but our still found in our bodies. It is not compulsory that if an organ is vestigial for humans, so will it be for other organisms too.