Question

Mention three characeteristice of the class to which shark belongs

Answer 1

Hi,

Here is your answer

Shark(Scoliodon) belongs to the class Chondrichthyes under the sub phylum Vertebrata under the phylum Chordata under the kingdom Animalia

Some features of class Chondrichthyes

• Their body is covered by cartilaginous skelton
• Their body is covered by placoid scales
• They do not have air bladder and have to constantly keep swimming to avoid sinking
• They have a ventral mouth.
• Their teeth are modified placoid scales
• They are poikilotherms
• They do not have operculum
• They are viviparous and the fertilisation is internal
• Some of the other organisms belonging to this class are Carcharodon, Trygon, Torpedo etc

Hope this helps you.