Activity 16_prelab PHYLUM PORIFERA
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Transcript of Activity 16_prelab PHYLUM PORIFERA
Activity 16: Activity 16: PHYLUM PHYLUM
PORIFERAPORIFERAThe SpongesThe SpongesPre-Lab DiscussionPre-Lab Discussion
Phylum PoriferaPhylum PoriferaPhylum PoriferaPhylum Porifera Lowest form of multicellular animalsLowest form of multicellular animals Filter feedersFilter feeders SessileSessile Free-swimming ciliated larvaeFree-swimming ciliated larvae Radial or no symmetryRadial or no symmetry Taxonomy is based on:Taxonomy is based on:
Endoskeletal elementsEndoskeletal elements SizeSize Composition of spiculesComposition of spicules
Lowest form of multicellular animalsLowest form of multicellular animals Filter feedersFilter feeders SessileSessile Free-swimming ciliated larvaeFree-swimming ciliated larvae Radial or no symmetryRadial or no symmetry Taxonomy is based on:Taxonomy is based on:
Endoskeletal elementsEndoskeletal elements SizeSize Composition of spiculesComposition of spicules
SKELETAL SKELETAL ELEMENTSELEMENTSSKELETAL SKELETAL ELEMENTSELEMENTS
Crystalline spiculesCrystalline spicules Calcareous Calcareous Siliceous Siliceous
Spongin fibersSpongin fibers
Crystalline spiculesCrystalline spicules Calcareous Calcareous Siliceous Siliceous
Spongin fibersSpongin fibers
ClassesClassesClassesClasses CalcispongiaeCalcispongiae – CaCO3 spicules – CaCO3 spicules HalospongiaeHalospongiae – siliceous – siliceous DemospongiaeDemospongiae – siliceous, spongin, – siliceous, spongin,
or bothor both SclerospongiaeSclerospongiae – siliceous and – siliceous and
spongin spongin
internallyinternally
– – calcium carbonate calcium carbonate
externally externally
CalcispongiaeCalcispongiae – CaCO3 spicules – CaCO3 spicules HalospongiaeHalospongiae – siliceous – siliceous DemospongiaeDemospongiae – siliceous, spongin, – siliceous, spongin,
or bothor both SclerospongiaeSclerospongiae – siliceous and – siliceous and
spongin spongin
internallyinternally
– – calcium carbonate calcium carbonate
externally externally
CANAL SYSTEMSCANAL SYSTEMSCANAL SYSTEMSCANAL SYSTEMS AsconoidAsconoid SyconoidSyconoid Leuconoid Leuconoid
AsconoidAsconoid SyconoidSyconoid Leuconoid Leuconoid
SPECIMEN:SPECIMEN:SPECIMEN:SPECIMEN: LeucosoleniaLeucosolenia – microscopic (w.m.)– microscopic (w.m.) GrantiaGrantia – microscopic (l.s.)– microscopic (l.s.) EuplectellaEuplectella (Venus Flower Basket)(Venus Flower Basket) SpongiaSpongia (common bath sponge)(common bath sponge) CarteriospongiaCarteriospongia (Elephant’s ear)(Elephant’s ear)
LeucosoleniaLeucosolenia – microscopic (w.m.)– microscopic (w.m.) GrantiaGrantia – microscopic (l.s.)– microscopic (l.s.) EuplectellaEuplectella (Venus Flower Basket)(Venus Flower Basket) SpongiaSpongia (common bath sponge)(common bath sponge) CarteriospongiaCarteriospongia (Elephant’s ear)(Elephant’s ear)
Carteriospongia
Euplectella
Leucosolenia
Grantia c.s.
IDENTIFYIDENTIFY
Stolon Stolon (if present)(if present) OsculumOsculum SpongocoelSpongocoel Ostium Ostium
Stolon Stolon (if present)(if present) OsculumOsculum SpongocoelSpongocoel Ostium Ostium
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