Q. Which one of the following pairs of animals comprises jawless fishes?
A) Mackerals and Rohu
B) Lampreys and hag fishes
C) Guppies and hag fishes
D) Lampreys and eels
Explanation
[Solution from source] Lampreys (Petromyzon) and hagfishes (Myxine) are cyclostomes, the jawless vertebrates (Agnatha). Eels, guppies, mackerel and rohu are bony fishes with jaws. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.