Which of the following is a marine snake?

To which of the following categories do dinosaurs belong?

Choose the correct statement.

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

Which of the following organisms possess dry,cornified skin with epidermal scales?

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