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General Characteristics of Chordates

This article discusses the general characteristics of chordates, including the development of the notochord, nerve cord, and gill slits, as well as the presence of a post-anal tail and closed blood vascular system. It also mentions the presence of a ventral heart and hepatic portal system, and a well-developed coelom.

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General Characteristics of Chordates

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  1. General character of chordatesB. Sc. IIV. S. SutarDepartment of ZoologyGKG College Kolhapur

  2. Rod like, elongated, elastic supportive structure called notochorddevelops during embryonic periods

  3. Dorsal tubular nerve cord develops which later on differentiate in tobrain and spinal cord in higher form

  4. Pharyngeal gill slits or gill clefts develop during early embryonic life

  5. Heart is situated on ventral side of body

  6. RBCs containing respiratory pigment Hb in blood

  7. Presence of portal system

  8. Post-anal tail- extension of body beyond anus is called tail

  9. Phylum- Urochordata

  10. General characters • Presence of nerve cord, notochord and gill slits • Generally body is bilaterally symmetrical • Presence of three germinal layers in embryonic condition • Presence of post anal tail • Closed blood vascular system • Presence of ventral heart and hepatic portal system • Presence of well developed coelome

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