These are few important cartilaginous fishes. Observe them and match with respective features.
1. Scolidon, the dog fish
2. Rhinocodon typus, the whale shark is the world's largest fish
3. Electric ray, Torpedo, power of giving electric shocks.
4. Carcharodon carcharius, the great white shark is most dangerous of all
5. Pristis. The saw fish.
6. Sphyma, Hammerheaded shark.

The correct option is D A- 1, B- 4, C- 3, D- 6, E- 5, F- 2
Rhincodon is the whale shark. It is a slow-moving filter feeding shark and the largest known extant fish species.

Electric ray also known as a Torpedo, they are known for being capable of producing an electric discharge, ranging from 8 to 220 volts.

The great white shark (Carcharodon carcharias), is a species of large lamniform shark which can be found in the coastal surface waters of all the major oceans and most dangerous of all.

Scoliodon is cartilaginous fish has to mouth like a dog and part of the family Carcharhinidae.

Pristis pristis, is a sawfish of the family Pristidae. It is found worldwide in tropical and subtropical coastal regions.

The smooth hammerhead (Sphyma zygaena) is a species of hammerhead shark, and part of the family Sphymidae.

Therefore, the correct answer is option D.