Question

The characteristics of class Reptilia are _______________________.

• A. Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears
• B. Body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca
• C. Fresh water animals with bony endoskeleton, air-bladder to regulate buoyancy
• D. Marine animals with cartilaginous endoskeleton, body covered with placoid scales

Answer 1

The correct option is A Body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears

Organisms under the class Reptilia are identified as cold-blooded organisms and their body is covered by dry and cornified scales. They have three-chambered heart, except crocodiles, and they breathe through the lungs. These animals do not possess external ears, instead, they have tympanum.

Hence, option A is the correct answer.