Question

Mention any six characteristics of class Cyclostomata.

Answer 1

Class Cyclostomata:

1. The Cyclostomata are a degenerate and mutated offshoot of the primordial vertebrate stalk.
2. They are called Cyclostomata because of their round mouth.
3. They are parasitic and feed on fish in their mature form.

Characteristics:

1. Their body is lengthy and elongated, with a circular mouth and horny teeth.
2. They are ectoparasites because they feed on fish blood.
3. Gills are used for respiration.
4. Because the skin is smooth, there are no scales.
5. There is a cylindrical notochord present.
6. It includes both lampreys and hagfishes.