Encyclopaedia Of Chordate Zoology

Nonfiction, Science & Nature, Science, Biological Sciences, Zoology, Nature, Animals
Cover of the book Encyclopaedia Of Chordate Zoology by Veena Kumari, Centrum Press
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Author: Veena Kumari ISBN: 9789388040952
Publisher: Centrum Press Publication: June 30, 2013
Imprint: Centrum Press Language: English
Author: Veena Kumari
ISBN: 9789388040952
Publisher: Centrum Press
Publication: June 30, 2013
Imprint: Centrum Press
Language: English

All beings of the phylum Chordata have branchial clefts in the pharynx, notochord and dorsal neural tube. In chordates the nervous system is dorsal and highly cephalized while in most invertebrates the nervous system is ganglial and ventral. In vertebrates the notochord disappears and gives birth to the spinal column (vertebral column). In protochordates the notochord remains for the rest of the life. The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry. With rare exceptions, fishes, amphibians, reptiles and monotreme mammals are oviparous, egg-laying (embryos develop within eggs and outside the mother’s body) and marsupial and placental mammals are viviparous (embryos develop inside the mother’s body, feeding from her). This text is a one-stop resource for all researchers, teachers, and students involved in this crucial area of study.

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All beings of the phylum Chordata have branchial clefts in the pharynx, notochord and dorsal neural tube. In chordates the nervous system is dorsal and highly cephalized while in most invertebrates the nervous system is ganglial and ventral. In vertebrates the notochord disappears and gives birth to the spinal column (vertebral column). In protochordates the notochord remains for the rest of the life. The tubular and dorsal nervous system of chordates is related to the cephalization in these animals and to bilateral symmetry. With rare exceptions, fishes, amphibians, reptiles and monotreme mammals are oviparous, egg-laying (embryos develop within eggs and outside the mother’s body) and marsupial and placental mammals are viviparous (embryos develop inside the mother’s body, feeding from her). This text is a one-stop resource for all researchers, teachers, and students involved in this crucial area of study.

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