Question

How do fishes show single circulation?

Answer 1

Fishes have two chambered hearts, i.e, they have only one atrium and one ventricle. the de-oxygenated blood is pumped to the gills where it gets oxigenated and then passes directly to the rest of the body. This type of circulation is called single circulation. Thus, fishes show single circulation.

Answer 2

Fish's heart has only two chambers. The blood goes to the gills to gain oxygen and becomes oxygenated . From here it does not go back to the heart but to all parts of the body of the fish . The blood goes to the heart only one time from atrium to ventricle to the gills to gain oxygen . As the blood passes only one time through the heart to complete its one cycle it is said to have a single circulatory system.