Q. Which one of the following pairs of animal comprises ‘jawless fishes’?
A) Lampreys and eels
B) Mackerals and rohu
C) Lampreys and hag fishes
D) Guppies and hag fishes
Explanation
Lampreys and Myxine (hag fish) belong to the class-Cyclostomata, group-Agnatha of vertebrata. Agnatha have mouth without jaws, the mouth is ventral, suctorial and circular.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.