why the structure of heart of birds are different from fishes
Answers
Answer:
fishes has incomplete circulatory system
Answer. Pisces (Fish heart) : It is a two chambered heart comprising of one atrium and one ventricle. Gills help in purifying the deoxygenated blood. Amphibian/Reptilian heart: It is a three chambered heart which includes two atria and one ventricle. Here both oxygenated and deoxygenated blood gets mixed up with each other. Double circulation is seen in the organisms possessing this type of heart. Lungs are involved in purifying the blood. Avian heart: Bird’s heart is a four chambered heart and complex in its evolution. It pumps more blood than mammalian heart as birds require lot of energy to fly high in the air Mammalian heart: It is made up of four chambers which include two atria and two ventricles. The organisms with this type of heart exhibit double circulation. The deoxygenated blood is completely separated from the oxygenated blood completely. The atria and ventricles are separated by many types of valves which prevent the mixing up of pure blood from that of impure blood.