1.

From a fish market, you got a fish, on a close watching you friend says it is a cartilaginous fish. 1. Which characters helped him to identify it as a cartilaginous fish, (any four characters.) 2. Name the class it belongs.

Answer»

1. Characters: 

  • a – Gillslits are separate and without operculum 
  • b – Placoidscale 
  • c – Mouth is located ventrally 
  • d – heterocercal caudal fin

2. Chondrichthyes



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