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Chapter 7 Lab Practical Porifera, Cnidaria,

Ctenophora, Mollusca

Porifera Skeleton and Cells

Porifera Water Flow

Porifera Organization and Morphology

Asconoid – simplest type; shaped like a tube or vase with a single osculum

Porifera Organization and Morphology

Syconoid – larger type with series of canals

Porifera Organization and Morphology

Leuconoid – most complex and most common; numerous canals that lead to chambers

Class Hexactinellida

glass sponge; ex: Euplectella – Venus’s flower basket

Cnidarian Characteristics

• Contain stinging cells called cnidocytes in their tentacles that contain coiled stingers called nematocysts that can shoot out & paralyze prey

Cnidarian Body Plan

• have 2 basic body forms: polyp and medusa

Cnidarian Life Cycle

Class Hydrozoa

• Portuguese man-of-war (Physalia physalis)

Class Scyphozoa Aurelia aurita (Moon Jellyfish)

Class Scyphozoa Chrysaora fuscescens (Pacific Sea Nettle)

Class Anthozoa Stony Corals (Branching Coral and Doming Coral)

Class Anthozoa Gorgonians (Sea Whips and Sea Fans)

Class Cubozoa Box Jellyfish

Phylum Ctenophora Sea Gooseberry

Class Polyplacophora

• ex: Chiton

Class Gastropoda

• ex: Abalone

Class Gastropoda

• ex: Nudibranch (sea slug)

Class Bivalia

• ex: Oysters

Class Bivalia

• ex: Scallops

Class Bivalia

• ex: Clams

Adductor

Class Cephalapoda

• Chromatophores in the skin can help change color for camouflage

Class Cephalapoda

• Use their radula & beak to feed

radula

beak

Class Cephalapoda - Squid

Class Cephalapoda - Octopus

Class Cephalapoda – Cuttlefish

Class Cephalapoda – Chambered Nautilius

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)