What type of circulatory system does a rabbit have?

Which of the following is $NOT$ a characteristic feature of open circulation?

Which of the following represents the correct pathway of the circulatory system?

In amphibians and reptiles,the $A$ atrium receives oxygenated blood from the gills/lungs/skin and $B$ atrium gets the $C$ blood from other body parts. Choose the correct option for $A$,$B$,and $C$.

Blood flowing towards the lungs has more of ....... than the blood flowing away from the lungs.

Through which vessel does the completely digested food reach the liver?