Which of the following is a marine snake?

Which reptile has a four-chambered heart?

In which one of the following animals does the cloaca serve as a respiratory organ?

The zoological name of the common Indian Krait is:

$A$ stumpy laterally compressed tail is characteristic of

$A$: The tortoise is classified under the class $Reptilia$.
$R$: The tortoise is a triploblastic,poikilothermic animal with epidermal scales.