Term
| Echinodermata development (protostome or deuterostome) |
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Class Asteroidea: sea stars
Class Ophiuroidea: brittle stars
Class Echinoidea: sea urchins
Class Holothuroidea: sea cucumbers |
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Term
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Phylum Echinodermata
Class Asteroidea
Genus Asterias (italic) |
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Term
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Definition
aboral surface
allows sea water to seep into an intricate water-vascular system, which provides the means of locomotion |
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| tiny calcareous pincer-like structures, function to keep the surface clear of debris such as algae |
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| hollow evaginations of the coelomic cavity through which respiration takes place |
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part of water-vascular system, they are hollow and their tips form suction discs for attachment
effective in locomotion and opening bivalves for food |
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Term
| Brittle Star Classification |
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Definition
Phylum Echinodermata
Class Ophiuroidea
Genus Ophiopholis or Ophioderma (italic) |
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Term
| Sea Urchin Classification |
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Definition
Phylum Echinodermata
Class Echinoidea |
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Term
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Definition
| spines covered with ciliated epidermis, used to grasp and crush small organisms that attempt to settle on the organisms exterior surface |
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| complex jaw-like structure that allows sea urchins to bite and chew marine vegetation upon which they live |
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Term
| Sea Cucumber Classification |
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Definition
Phylum Echinodermata
Class Holothuroidea
Genus Cucumaria (italic) |
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Term
| tentacles of sea cucumber |
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Definition
| used for feeding, stretches mucous-covered tentacles into the water until they are covered with tiny food organisms and then thrusts the tentacles into the mouth |
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Term
| Name three different types of respiratory structures found in members of this phylum |
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Definition
| bursae, respiratory trees, skin gills |
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