Question

no. of aortic arches in cartilaginous fishes are​

Answer 1

Answer:

Among dipnoans there are four or five aortic arches that develop from the ventral aorta which supply blood to the gills. In the Protopterus the aortic arches retain second, third, fourth, fifth and sixth. The arches like the fish have afferent and efferent divisions.

By this means five or six pairs of aortic arches are formed. The aortic arches join the dorsal aorta on each side

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