A zoologist discovers a vertebrate unknown to science and thinks it is related to lampreys. Which of the following characteristics would lead her to this conclusion?
A) It lacks jaws.
B) It has lobed fins.
C) It has an amniotic egg.
D) It is terrestrial.
E) It is endothermic.

Question

Quizplus · Accepted Answer

Lampreys are characterized by their lack of jaws, which distinguishes them from most other fish. This feature would lead a zoologist to conclude a vertebrate is related to lampreys.

A Zoologist Discovers a Vertebrate Unknown to Science and Thinks