Cartilaginous Fishes Such as Sharks and Rays

Question

Cartilaginous fishes such as sharks and rays
A) Are much more diverse than bony fishes
B) Are much less diverse than bony fishes
C) Live at greater depths than bony fishes
D) Are exclusively carnivores on bony fishes

Accepted Answer

Bony fishes are significantly more diverse than cartilaginous fishes. There are thousands of species of bony fishes compared to a much smaller number of cartilaginous fish species.