How many chambers are present in the heart of the frog?

How many chambers are present in the heart of the frog?
A. Two
B. Three
C. Four
D. Five

Answer:
B. Three

Explanation:
The heart of a frog has three chambers, two atria and one ventricle and is covered by a membrane called the pericardium. A triangular structure called as sinus venosus joins the right atrium.