Those organic structures that do not seem to play any important biological function in the organism that possesses them are known as vestigial structures.
A vestigial structure is one that has atrophied or lost its original function throughout the course of evolution.
Therefore, we can conclude that vestigial structures are structures that some organisms still conserve as an inheritance from their ancestors but that, for some reason or another, are no longer useful for the functioning of the same.
Learn more about vestigial structures here: https://brainly.com/question/2141655