OBJECTIVE LIFE SCIENCE
EVOLUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Structures that had a purpose in an ancestral organism, but not in the evolved organism
|
|
|
Structures that never had a purpose in this or ancestral organisms
|
|
|
Structures that have atrophied in an individual because they have not been used much in their lifetime
|
|
|
Structures that have grown larger in an organism due to overuse
|
Detailed explanation-1: -Vestigial structures are anatomical structures of organisms in a species which are considered to have lost much or all of their original function through evolution. These structures are typically in a degenerate, atrophied, or rudimentary condition or form.
Detailed explanation-2: -Structures that have lost their use through evolution are called vestigial structures. They provide evidence for evolution because they suggest that an organism changed from using the structure to not using the structure, or using it for a different purpose.
Detailed explanation-3: -Vestigial structures are homologous to fully functioning structures inherited by related lineages. Thus, they provide strong evidence of common ancestry and can help us trace the evolutionary origin of the species with the vestigial structures.
Detailed explanation-4: -A vestigial structure is a rudimentary biological structure that was not rudimentary in the ancestors of its bearer. Such a structure is interpreted by evolutionary biologists as a vestige of a homologous structure that was more fully functional and often larger in the ancestors of the organism in question.