Which one of the following animals has two separate circulatory pathways ?
Lizard
Whale
Shark
Frog
Heart in mammalia -
4-chambered, two auricles and two ventricles.
-
Whale is a mammal which has 4 chambered heart, so has complete separation of oxygenated and deoxygenated blood. Whales have double circulatory pathways: Systemic and pulmonary circulation
Option 1)
Lizard
Option is incorrect
Option 2)
Whale
Option is correct
Option 3)
Shark
Option is incorrect
Option 4)
Frog
Option is incorrect