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Chapter 7 Lab Practical Porifera, Cnidaria,
Ctenophora, Mollusca
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Porifera Skeleton and Cells
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Porifera Water Flow
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Porifera Organization and Morphology
Asconoid – simplest type; shaped like a tube or vase with a single osculum
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Porifera Organization and Morphology
Syconoid – larger type with series of canals
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Porifera Organization and Morphology
Leuconoid – most complex and most common; numerous canals that lead to chambers
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Class Hexactinellida
glass sponge; ex: Euplectella – Venus’s flower basket
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Cnidarian Characteristics
• Contain stinging cells called cnidocytes in their tentacles that contain coiled stingers called nematocysts that can shoot out & paralyze prey
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Cnidarian Body Plan
• have 2 basic body forms: polyp and medusa
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Cnidarian Life Cycle
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Class Hydrozoa
• Portuguese man-of-war (Physalia physalis)
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Class Scyphozoa Aurelia aurita (Moon Jellyfish)
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Class Scyphozoa Chrysaora fuscescens (Pacific Sea Nettle)
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Class Anthozoa Stony Corals (Branching Coral and Doming Coral)
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Class Anthozoa Gorgonians (Sea Whips and Sea Fans)
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Class Cubozoa Box Jellyfish
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Phylum Ctenophora Sea Gooseberry
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Class Polyplacophora
• ex: Chiton
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Class Gastropoda
• ex: Abalone
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Class Gastropoda
• ex: Nudibranch (sea slug)
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Class Bivalia
• ex: Oysters
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Class Bivalia
• ex: Scallops
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Class Bivalia
• ex: Clams
Adductor
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Class Cephalapoda
• Chromatophores in the skin can help change color for camouflage
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Class Cephalapoda
• Use their radula & beak to feed
radula
beak
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Class Cephalapoda - Squid
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Class Cephalapoda - Octopus
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Class Cephalapoda – Cuttlefish
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Class Cephalapoda – Chambered Nautilius
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Chapter 7 Test Study Guide Porifera, Cnidarian, Ctenophores, Mollusks
•Vocab from the terms in the Lab Practical
•Symmetry types
•Classification (classes found in each Phylum)