Find the correct statement about class Reptilia
1.dry and cornified skin, epidermal scales and absence of external ears
2.marine habitat, endoskeleton is cartilaginous and have placoid scales
3. fresh-water habitat, bony endoskeleton and air-bladder for buoyancy
4.moist skin and body is devoid of scales, the ear is represented by the tympanum
Posted Date:-2021-02-22 13:38:30