Air bladder is

(a) Stream lined body (b) Four pair of gills (c) Air bladder is present (d) In males pelvic fins bear claspers (e) Two chambered heart (f) Fertilization is usually external How many statements are correct for the members of class osteichthyes?

Air bladder in a fish helps in

Air bladder in a fish helps in

Air bladder in bony fishes helps in

Air bladder in bony fishes helps in

How Important is the presence of an Air bladder in Pisces?

Air bladders are seen in …..

What is the role of air bladder in fishes ?