Published in Zoology
Thursday, 06 July 2017 20:53
In chordate animals notochord, dorsal tubular nerve cord and pharyngeal slits are present.
In Amphioxus notochord is a cylindrical rod extending the whole length of the body from anterior end to posterior end. it is present below the dorsal nerve cord and above the alimentary canal. The notochord is formed b vacuolated cells. They are filled with fluid. These turgid cells will give strength to the notochord. This notochord is covered by a sheath of connective tissue.
In Amphioxus the notochord extends from anterior end to posterior end, hence it is placed in Sub phylum Cephalochordate. This notochord gives strength to the animal.Notochord is acts as a skeleton of amphioxus.

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