ADL Review - Phylum Cnidaria Class info Polyp Medusa life cycle Hydrozoa colonial/marine planula larvae polymorphism(most dimorphic Hydra atypical

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Phylum Cnid- aria: Class •info •Polyp •Medusa •life cycle Hydrozoa •colonial/marine •planula larvae •polymorphism (most dimorphic) •Hydra; atypical, stalk can regenerate, no medusa, freshwater, solitary •asexual •mostly colonial •gastrozooids (capture&in- gestion of prey), gono- zooids (reproduction-medu- sae) •dactylozoids (defense), •gonangia (reproductive polyp) •sexual •very small •statocyst (equilibrium organ) •ocelli (simple eyes) •velum (protective cor- al) •polyp colony-me- dusa-zy- gote-planula Scyphozoa •mostly marine •large jellyfish- thick mesoglea •short stage •scyphistoma (reduced stage that undergos trans- verse fission by strobila- tion= strobilla (contains ephyrae) •dominant medusa stage; no velum •lappets, rhopalium (sensory organ); stato- cyst, pits, ocellus •mouth, manubrium, 4 oral lobes (capture food), gastric pouches (contain nematocysts- connect w/ stomach, ra- dial->ring canals= GVC) •medusa-zy- gote-plan- ula- scyphistoma -strobilla- ephyra (im- mature me- dusa)
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Phylum Cnid- aria: Class •info •Polyp •Medusa •life cycle Hydrozoa •colonial/marine •planula larvae •polymorphism (most dimorphic) •Hydra; atypical, stalk can regenerate, no medusa, freshwater, solitary •asexual •mostly colonial •gastrozooids (capture&in- gestion of prey), gono- zooids (reproduction-medu- sae) •dactylozoids (defense), •gonangia (reproductive polyp) •sexual •very small •statocyst (equilibrium organ) •ocelli (simple eyes) •velum (protective cor- al) •polyp colony-me- dusa-zy- gote-planula Anthozoa •corals, sea pansies, fans, anemones •mouth connects to invaginated pharynx/gullet into GVC •siphonoglyphs (ciliated grooves in gullet from mouth-GVC) •Zoantharia; sea anemones (oral disc- mouth&tentacles, leads to pharynx); sy- phonoglyph (in pharynx- makes current); actonia (nematocyst threads at bottom); hard corals (secrete calcium carbonate skeleton- can retract into exoskeleton for safety) •Ceriantipatharia (tube anemones, thorny corals) •Octacorallia •none
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aria: Class •info •Polyp •Medusa •life cycle Hydrozoa •colonial/marine •planula larvae •polymorphism (most dimorphic) •Hydra; atypical, stalk can regenerate, no medusa, freshwater, solitary •asexual •mostly colonial •gastrozooids (capture&in- gestion of prey), gono- zooids (reproduction-medu- sae) •dactylozoids (defense), •gonangia (reproductive polyp) •sexual •very small •statocyst (equilibrium organ) •ocelli (simple eyes) •velum (protective cor- al) •polyp colony-me- dusa-zy- gote-planula Staurozoa •solitary •top resembles medusa •has 8 extensions, each with tenacles •none Cubozoa •more developed eyes •among most dangerous •sea wasp = fatalities •dominant •bell is square prefix/ suffix meaning prefix/ suffix meaning example unus one ramus branch uniramous arthron joint podos foot Arthropoda chele claw keras horn chelicera
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This note was uploaded on 06/13/2011 for the course BIOLOGY bsc2011L taught by Professor Dr.tschinkel during the Fall '11 term at FSU.

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ADL Review - Phylum Cnidaria Class info Polyp Medusa life cycle Hydrozoa colonial/marine planula larvae polymorphism(most dimorphic Hydra atypical

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