1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
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
b
fresh water animals with bony endoskeleton, air-bladder to regulate buoyancy
c
marine animals with cartilaginous endoskeleton, 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 is D.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
In reptiles, body covered with dry and cornified skin, scales over the body are epidermal and they do not have external ears.Skin is moist and scaleless in amphibians.Members of Osteichthyes have air bladder for buoyancy.Members of Chondrichthyes have bony endoskeleton and placoid scales.