How does the respiratory system of cartilaginous fishes differ from th

Question

How does the respiratory system of cartilaginous fishes differ from that of bony fishes?

18 Jan 2021

Answer :

Word Count : 279

RESPIRATION IN CARTILIGENOUS FISHES

Living cartiligenous fishes are placed in class Chondricthyes which includes mostly marine sharks, rays and skates (Elasmobranchii); and elephant fishes, rat fishes and rabbit fishes (Holocepahli). In Elasmobronchii five to seven gill arches and gill slits in separate clefts on either side along pharynx are present. Elasmobranchii lack operculum. Holocephali has 4 gill slits covered by cartilaginous operculum. In Elasmobronchii breathing/ventilation occurs when large volume ___ _____ ____ _______ __________ _________ _______ ___ ______.
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Column A	Column B
a. Parietal	A. Pectoral girdle
b. Vomer	B. Cranium
c. Maxilla	C. Olfactory capsule
d. Dentary	D. Upper jaw
e. Clavicle	E. Pelvic girdle
f. Pubis	F. Lower jaw