Which of the following combinations differentiates a bony fish from a cartilaginous fish? I. Presence of gills II. Absence of gill slits III. Possession of bony skeleton IV. Possession of laterally compressed body V. Possession of dorso-ventrally compressed body
A. I, II and III
B. I, III and IV
C. II, III and IV
D. II, III and V
Which is the most important adaptation of a bony fish life in water?
A. The possession of a streamlined shape
B. The presence of overlapping scales
C. the covering of the body by thin film of slime
D. The possession of a caudal fin
Which of the labelled parts allows for efficient absorption of water and minerals?