The pharyngeal slits of early chordates were modified through evolution to provide a range of functions including
A) gills.
B) gas exchange.
C) vocalisation.
D) hearing.
E) All of the answers are correct.

Question

Quizplus · Accepted Answer

Pharyngeal slits in early chordates have evolved to serve various functions in different descendants, including gills for filtering feeding and gas exchange in aquatic organisms, structures involved in vocalization in some animals, and components of the ear for hearing in terrestrial vertebrates.

The Pharyngeal Slits of Early Chordates Were Modified Through Evolution