Q. $Trygon$ has
A) Two chambered heart
B) The males have claspers
C) Presence of gill slits
D) All of the above
Explanation
Trygon is also called sting ray and belongs to class-Chondrichthyes. They have two-chambered heart, males have claspers and respiration is by exchange of gases with the water through gills
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.