Question

How respiration takes place in class Cyclostomata?

Answer 1

Class Cyclostomata:

1. It belongs to the phylum Chordata.
2. Cyclostomata is derived from the Greek words cylos, which means "circle," and stoma, which means "mouth."
3. Their body is lengthy and elongated, with a circular mouth and horny teeth and the jaws are absent.
4. They are ectoparasites because they feed on fish blood.
5. Gills are used for respiration. The chemical process through which organic substances release energy is known as respiration.
6. Radial folds that run between the pouch's medial and lateral walls and the branchial microcirculation expand their interior surface.
7. Blood and water travel through the gills in a countercurrent arrangement, allowing for respiration.
8. Hagfishes and lampreys are examples of Cyclostomata.