Question

Which of the following statements about vertebrate circulatory systems is false? A. Birds have a four-chambered heart. B. Reptiles have partially divided ventricles. C. Amphibians have 2 atria and 1 ventricle. D. In fish, blood passes through the gills, returns to the heart, and then is pumped to the systemic tissues.

Answer 1

B. In fishes, blood passes through the gills, returns to the heart, and then is pumped to the systemic tissues.

Step-by-step explanation:

In fish, blood does not pass through the gills, returns to the heart and is then pumped into the systemic tissues.

Most fish breathe through gills. Water continually enters the fish's mouth, bathes the gills and exits through the openings on either side of the head. Most fish breathe through gills, also known as gills. Water continually enters the fish's mouth, bathes the gills and exits through the openings on either side of the head.

The heart of the fish has two cavities, an atrium and a ventricle - and through it only unoxygenated blood circulates. After passing through the heart, unoxygenated blood goes to an artery and into the gills where it receives oxygen gas. This now oxygenated blood is distributed to all organs of the animal's body.