Q. Petromyzon and myxine belong to class
A) Gnathostomata
B) Cyclostomata
C) Urochordata
D) Protochordata
Explanation
Class-Cyclostomata includes round mouthed fish like lampreys (Petromyzon) and hags (Myxine)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.