Answer to Question #178661 in Zoology for vijay Kumar Malviya

Question

Describe the external features of patromyzone

Answer 1

Petromyzon body is divisible in three regions, viz., head, trunk, and tail, which are not clearly demarcated. The head and trunk are nearly cylindrical and the tail is more or less laterally flattened. In addition, the fins are supported by thin cartilaginous fin-rays.