Q205. Which one of the following pairs belongs to cartilaginous fish ? (a)Shark and Tuna (b)Shark and Ray (c)Skates and Hilsa (d)Ray and Eel
Correct Option: B The cartilaginous fish are so named because their skeleton is composed of cartilage which is not reinforced by the minerals that make bone. It includes elasmobranchs: sharks, rays and skates, etc.
