Question

During one cycle how many times does the blood goes to the heart of the fish and why

Answer 1

In fishes, only one time the blood passes through the heart. This type of circulation is known as single circulatory system.

In fishes, instead of lungs, gills are present which purifies the blood. Deoxygenated blood moves from heart to the gills for the cleaning process and then this oxygenated blood is pumped back to all the other parts of the body.

Answer 2

Answer:

Blood goes to the heart of fish only one time during one cycle. This happens because fish has two-chambered heart, the blood is pumped to the gills for oxygenation from where it is passed directly to the rest of the body.