Question

Pancreas is absent in

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

Answer 1

The correct option is D Cyclostomata

A. Amphibians are the cold-blooded, freshwater vertebrates which can live both on land and in water.

B. Osteichthyes is the class of bony fishes which include lungfishes, ray-finned fishes and lobe-finned fishes.

C. Chondrichthyes is a class of Cartilaginous fishes which include sharks, rays and Chimaeras.

D. Cyclostomata is a class of round mouthed fishes under the superclass Agnatha which is known as Jawless vertebrates. The digestive system of Cyclostomata lacks stomach and pancreas.

So, the correct answer is 'Cyclostomata'.