To solve this problem, we need to determine why a frog's heart continues to beat after being removed from the body. Let's analyze each statement:$\newline \bullet$(a) Frog is a poikilotherm:$\newline$ - Poikilotherms are organisms whose internal temperature varies considerably.$\newline$ - This characteristic does not directly explain why the heart continues to beat outside the body.$\newline \bullet$(b) Frog does not have any coronary circulation:$\newline$ - Coronary circulation refers to the blood supply to the heart muscle itself.$\newline$