Question

What is Cyclostomata?​

Answer 1

Answer:

The Cyclostomata are the modified and degenerate offshoot of the primitive vertebrate stalk. Due to their circular mouth, they are named Cyclostomata. They are parasitic, usually feeding on fish in their adult stage. They are known to be the only living vertebrates without true jaws, hence called Agnatha.

Explanation:

Answer 2

Cyclostomi, often referred to as cyclostomata. It is a group of vertebrates that comprises the living jawless fishes: the lampreys and hagfishes. ... The name Cyclostomi means "round mouths".