Question

Sharks are killers of the deep seas. Which of the following is a characteristic of sharks?
(A) They are bony.
(B) They are cartilaginous.
(C) They are mostly warm-blooded.
(D) Gill slits are covered.​

Answer 1

Answer:

Cartilaginous fish are fish that have a skeleton made of cartilage, rather than bone. Cartilaginous fish include sharks, rays, skates and chimaeras. The cartilages are tough and flexible and provides enough structural support to allow these fish to grow to very large sizes.

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