Multiple Choice
Which of the following statements best describes the jawless fishes?
A) Ectotherms that have a bony skeleton.
B) Ectotherms that have a smooth nonscaly skin.
C) Endotherms that have a smooth nonscaly skin.
D) Vertebrates that have scales and are ectothermic.
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Sharks<br>A)lack bony skeletons.<br>B)have dermal denticles.<br>C)have a keen
Q3: _ were the first vertebrates to live
Q4: Which of the following groups had made
Q5: All of the following statements concerning birds
Q6: The circulatory pathways of vertebrates are pictured.Briefly
Q8: Reptiles evolved from _ ancestors and were
Q9: Which of these characteristics is NOT found
Q10: Name the two groups of organisms that
Q11: Which of the following reptilian features enabled
Q12: Amphibians were the dominant animal life during