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14 Cards in this Set
- Front
- Back
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are echinoderms protostomes or deuterostomes? |
deuterostomes |
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how do protostomes and deuterostomes differ |
early cleavage patterns, mesoderm, coelom formation and larval type |
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where are echinoderms found? |
exclusively marine |
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what kind of symmetry? |
secondarily radially symmetric because the larval forms are bilaterally symmetric |
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what is pentaradial? |
five sections around a central axis |
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unique feature of the phylum |
water vascular system |
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function of the hydraulic system |
mainly locomotion, but also for feeding and respiration. |
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is there an excretory system? |
no |
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momecious or diecious? |
most are diecious |
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type of fertilization? |
external |
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three subphyla in echinodermata? |
crinozoa, asterozoa, echinozoa |
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class in subphylum crinozoa |
class crinoidea |
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class and subclasses in asterzoa |
class stelleroidea, subclasses asteroidea and ophiuroidea |
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classes in subphylum echinozoa |
class echinoidea and class holothuroidea |
