The characteristic of class Reptilia are

Options

A. body covered with moist skin which is devoid of scales, the ear is represented by a tympanun, alimentary canal, uninary and reproductive tracts open into a common cloaca
B. freshwater animals with bony endoskeleton, air bladder to regulate buoyancy
C. marine animals with cartilaginous endoskelecton, body covered with placoid scales
D. body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears

Answer

D