Chapter 22 - CHAPTER 22 ECHINODERMS AND HEMICHORDATES...

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CHAPTER 22 ECHINODERMS AND HEMICHORDATES
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Outline Phylum Echinodermata General characteristics Class Asteroidea Class Ophiuroidea Class Echinoidea Class Holothuroidea Phylum Hemichordata General characteristics
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Phylum Echinodermata Deuterostomes Radial cleavage Regulative development Anus from blastopore Enterocoelus
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Phylum Echinodermata Pentaradial symmetry Ambulacra Regeneration
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Phylum Echinodermata Digestive system Complete Nervous system No head or brain Sensory organs Circumoral ring Radial nerves
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Phylum Echinodermata Dermal Endoskeleton Calcareous ossicles with spines Calcareous spicules Water vascular system Podia Madreporite Hemal system
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Phylum Echinodermata Respiration Branchiae Tube feet Reproduction Dioecious External fertilization No excretory organs
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Class Asteroidea Star shaped Open ambulacral grooves Tube feet with suckers oral side Anus and madreporite aboral side Pedicellariae Sea stars
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Figure 22.co
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This note was uploaded on 04/03/2008 for the course BIOL 1413 taught by Professor Veazey during the Spring '08 term at Southwest Texas Junior College.

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Chapter 22 - CHAPTER 22 ECHINODERMS AND HEMICHORDATES...

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