Identify the incorrect statement about frog.
Channel: Doubtnut
Date: 2020-08-30

Fill up the blanks in the following paragraph by selecting the correct option  The vascular system of frog is well-developed `ul("I")` type. The blood vascular system involves heart, blood vessels and blood. Heart has 3 chambers, two atria and one ventricle and is covered bu a membrane called `ul("ii")`. A triangular structure called `ul("iii")` joins the right atrium.