SA · Q22
Q.Distinguish between Chondrichthyes and Osteichthyes on the basis of
(a) nature of endoskeleton,
(b) presence of operculum, and
(c) presence of air bladder.
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Start your 14-day free trial to unlock the full solution →Step 1. (a) Chondrichthyes has an entirely cartilaginous endoskeleton, including the jaws, whereas Osteichthyes has a truly bony endoskeleton.
Step 2. (b) Chondrichthyes lacks a protective operculum over the gill slits, which are typically visible externally, whereas Osteichthyes has a bony operculum covering the gills on each side. …
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