Question

Petromyzon belongs to class

• A. Osteichthyes
• B. Chondrichthyes
• C. Cyclostomata
• D. Amphibia

Answer 1

The correct option is C Cyclostomata

A. Class Osteichthyes comes under the superclass Pisces and includes lungfishes, lobbed finned fishes and ray-finned fishes.

B. Class Chondrichthyes comes under the superclass Pisces. Most fishes are marine and a few live in the tropical rivers.

C. Class Cyclostomata comes under superclass Agnatha which is a paraphyletic superclass of jawless fishes.

D. Class Amphibia comprises the animals that inhabit both land and water.

Petromyzon belongs to class Cyclostomata.

So, the correct answer is 'Cyclostomata'.