The following points highlight the nineteen interesting members of Echinoderms. The members are: 1. Astropecten 2. Heliaster 3. Zoroaster 4. Ctenidiscus 5. Porcellanaster 6. Luidia 7. Solaster 8. Clypeastre 9. Diadema 10. Arbacia 11. Laganum 12. Echinocardium 13. Thyone 14. Cucumaria 15. Pelagothuria 16. Opheodesoma 17. Ophioderma 18. Gorgonocephalus 19. Metacrinus. Echinoderms: Member # 1. Astropecten: Astroyecten (Fig, 21. 26) [...]
Larva Found in Phylum Echinodermata! 1. Dipleurula Larva: 1. The dipleurula form (Fig. 21.39A) is reached during development and is characterised by its bilaterally symmetrical, egg-shaped body. 2. The ventral concave side bears the mouth and is encircled by a circumoral ciliated band. 3. The anus is disposed ventrally. 4. The digestive canal is differentiated into oesophagus, stomach and intestine. [...]
In this article we will discuss about Antedon:- 1. Habit and Habitat of Antedon 2. External Structures of Antedon 3. Body Wall 4. Coelom 5. Digestive System 6. Respiratory System 7. Water Vascular System 8. Haemal System or Blood Lacunar System 9. Locomotion 10. Excretory System 11. Nervous System 12. Reproductive System 13. Fertilization and Development. Contents: Habit and Habitat [...]