In sharks, one of the following is absent …………. (J&K 2008)
A. Claspers
B. Placoid scales
C. Cartilaginous endoskeleton
D. Air bladder
Answer:D
In sharks, one of the following is absent …………. (J&K 2008)
A. Claspers B. Placoid scales C. Cartilaginous endoskeleton D. Air bladder