OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What structures do many vertebrates have early in their development to suggest a common ancestor?
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pharyngeal pouches
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vestigial structures
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homologous structures
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analogous structures
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Explanation:
Detailed explanation-1: -The vertebrate pharyngeal apparatus, serving the dual functions of feeding and respiration, has its embryonic origin in a series of bulges found on the lateral surface of the head, the pharyngeal arches.
Detailed explanation-2: -Pharyngeal Clefts The anatomic space formed by the first pharyngeal cleft between the first and second branchial arches gives rise to the adult external auditory meatus.
Detailed explanation-3: -In the embryonic development of vertebrates, pharyngeal pouches form on the endodermal side between the pharyngeal arches. The pharyngeal grooves (or clefts) form the lateral ectodermal surface of the neck region to separate the arches.
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