Answered: Define class-chondeichtyes with…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Define class-chondeichtyes with diagram?

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Phylum Chordates are characterized by the presence of four diagnostic characters notochord, dorsal hollow nerve cord, pharyngeal gill slits, and tail either in the embryonic or adult stage. And is divided into three subphyla urochordates, cephalochordates, and Vertebrata.

Sub-phylum Vertebrata is characterized by the presence of the brain and vertebral column. It is further divided into two sections Agnatha and Gnathostomata.

Section Gnathostomata includes jawed vertebrates and is divided into two superclasses Pisces and Tetrapoda.

Superclass Pisces includes true fishes and divided into three classes Placodermi, Chondrichthyes, and Osteichthyes.

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