Among vertebrates, the unique feature of lampreys and hagfish is the ________.
A)presence of a cartilaginous skeleton
B)absence of a backbone
C)absence of jaws
D)absence of a post-anal tail

Question

Quizplus · Accepted Answer

Hagfish and lampreys are jawless fish, which means they do not have jaws or paired fins. This is a unique feature among vertebrates, as all other vertebrates have jaws.

Among Vertebrates, the Unique Feature of Lampreys and Hagfish Is