Which among the following is the main difference between Chondrichthytes and Osteichthytes?
A. Endoskeleton composition
B. Fins
C. Type of blood
D. Type of jaws
Answer:A
Which among the following is the main difference between Chondrichthytes and Osteichthytes?
A. Endoskeleton composition B. Fins C. Type of blood D. Type of jaws