OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Homologous structure
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Analogous structure
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Vestigial structure
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None of the above
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Detailed explanation-1: -A “vestigial structure” or “vestigial organ” is an anatomical feature or behavior that no longer seems to have a purpose in the current form of an organism of the given species. Often, these vestigial structures were organs that performed some important functions in the organism at one point in the past.
Detailed explanation-2: -Vestigial structures are often referred to as vestigial organs, though not all of them are actually organs. Although the structures most commonly referred to as “vestigial” tend to be largely or entirely functionless, a vestigial structure need not necessarily be without use or function for the organism.
Detailed explanation-3: -The pelvic girdle connects the spine to the lower limbs. Therefore, it is not vestigial.