porifera
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Phylum Porifera
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Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Simple Sponge Morphology
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Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Sponge Body Forms
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Spicule
Skeleton of sponge Calcium carbonate Silicon Collagen
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Archeocyte
Amoeboid cells Receive food from
choanocytes Differentiate into
other cell types
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Mesenchyme(Mesoglea or Mesohyl)
Gelantinous matrix
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Pinococyte
Outer surface of sponge
Contractile
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Choanocyte
Flagellated cells One end in
mesnchyme Flagella creates
water currents Collar traps food Passes food to
archeocyte
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Porocyte
Forms a pore
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Asconoid SpongeAsconoid Sponge
OstiumOstiumOstiumOstium
SpongocoelSpongocoelSpongocoelSpongocoel
OsculumOsculumOsculumOsculum
PorocytePorocytePorocytePorocyte
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Syconoid Sponge
Osculum
Ostium
Spongocoel
Choanocytes
Radial CanalIncurrent Canal
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Syconoid Sponge
Spongocoel
Ostium
ChoanocytesRadial Canal
Incurrent Canal
Scypha (Grantia) xs
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Leuconoid SpongeLeuconoid Sponge
ChoanocyteChoanocytechamberchamber
ChoanocyteChoanocytechamberchamber
OsculumOsculumOsculumOsculum
Incurrent canalIncurrent canalIncurrent canalIncurrent canal
Excurrent canalExcurrent canalExcurrent canalExcurrent canal
Incurrent poreIncurrent poreIncurrent poreIncurrent pore
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Class CalcareaGrantia
Small Vase shape Spicules of calcium
carbonate Straight or 3-4 rays
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Class Hexactinellida Euplectella
Spicules Siliceous 6 rays
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Class Demospongiae Spongia
Spicules Siliceous spongin
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Physiology
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Sexual Reproduction
Monoecious Both male and female
Sperm and egg derived from choanocytes
Ciliated larva Swim to new location
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BuddingBudding
FragmentationFragmentation
Gemmule formationGemmule formation
-survive freezing-survive freezing
BuddingBudding
FragmentationFragmentation
Gemmule formationGemmule formation
-survive freezing-survive freezing
MicropyleMicropyleMicropyleMicropyle
SpiculeSpiculeSpiculeSpicule
Asexual ReproductionAsexual Reproduction
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