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Echinoderms in ocean, Exams of Zoology

Utkal UniversityZoology

Watervascular system as seen in marine echinoderms

Typology: Exams

2017/2018

Uploaded on 05/23/2018

Sukadev
Sukadev 🇮🇳

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Radial canal Ba Lateral canal Madreporite Cilated pore Madreporite canals Opening of ampulla into axial sinus: Stone canal Axial gland Fig. 21.7: A. Water vascular system in Asterizs. Note thal in Astenas the polian vesicles are absent. B. Enlarged view of the madreporite of Asfenizs. C. Diagrammatic view of the vertical section through the madreporite in Asterias. D. Diagrammatic sectional view of a tube-foot and its nerve supply in Asterias,