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
Osteichthyes
b
Placodermi
c
Chondrichthyes
d
Reptilia
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
Cycloid or ctenoid Scales are common in bony fishes.Placoid scales are found in cartilaginous fishes.Reptiles have ectodermal scales. In fishes, the scales are (meso) dermal in origin.