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25 Cards in this Set
- Front
- Back
What type of symmetry do the classes of Phylum Echinodermata have?
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Classes Asteroida Ophiuroidea and Crinoidae have bilateral symmetry in the larval stage and radial in adult stage. Class Holothuroidea has bilateral and Class Echinoidea has radial. |
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How many tissue layers are present in Phylum Echinodermata?
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All classes have 3 tissue layers
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Would Phylum Echinodermata be classified as coelomate or acoelomate? |
All classes are coelomate. |
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What type of digestive openings do organisms in Phylum Echinodermata have? |
All classes have a TWIT gut with 2 openings
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Do organisms in Phylum Echinodermata have a circulatory system? |
No they have a Water Vascular System |
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What is the habitat that organisms from Phylum Echinodermata occupy? |
All classes are aquatic |
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Do organisms in Phylum Echinodermata have a respiratory system? |
No all classes have a water vascular system.
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Do organisms in Phylum Echinodermata have an excretory system? |
No all classes have a water vascular system |
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What is the locomotion present in Class Asteroida? |
They use their water vascular system and tube feet to move. |
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What is the locomotion present in Class Ophiuroidea? |
They use their arms to move |
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What is the locomotion present in Class Echinoidea? |
They use their tube feed or spines to move around. |
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What is the locomotion present in Class Holothuroidea? |
They use their tube feet to move |
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What is the locomotion present in Class Crinoidea? |
They are mainly sessile. |
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What is the support system present in Phylum Echinodermata? |
All classes have an endoskeleton. |
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Are organisms in Phylum Echinodermata considered segmented? |
Not really but some do have a central disc like structure. |
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Is there a nervous system present in Phylum Echinodermata? |
Yes, all classes have a nerve net or a nerve ring with radial nerves. |
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What are the reproductive strategies present in Phylum Echinodermata?
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All classes have separate sexes and reproduce sexually. |
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What is important to remember about organisms form Phylum Echinodermata? |
They are non-chordate Deuterostomes. |
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Classify this.
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Phylum Echinodermata, Class Asteroidea, Sea star.
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Classify this.
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Phylum Echinodermata, Class Crinoidea, Feather Star.
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Classify this.
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Phylum Echinodermata, Class Echinoidea, Sand Dollar.
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Classify this.
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Phylum Echinodermata, Class Holothuroidea, Sea Cucumber.
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Classify this.
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Phylum Echinodermata, Class Ophiuroidea, Brittle Star.
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Classify this.
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Phylum Echinodermata, Class Echinoidea, Sea Urchin.
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Classify this.
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Phylum Echinodermata, Class Ophiuroidea, Brittle Star.
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