Transcript Whiskey is for drinking and water is for fighting

Phylum Porifera
(Sponges)
Picture
Pictures
Picture
General Charac.
• Sessile
• Big or small
• Encrusting, vase-like,
etc.
Visible Openings
• Osculum
• One or many
Outer Layer
• Epithelial cells
♦ Protect and
enclose
♦ Provide limited
motion
• Porocyte cells
Inner Layer
• Lined with collar cells
Collar Cells
• Tubes and
flagellum
• Flagella move to
create current
• Filter several
gallons per day!
Skeleton
• Between inner and outer
layers
♦ Soft and springy – spongin
♦ Stiff – spicules
• Both produced by amoebocytes
Kinds of Spicules
Porifera Feeding
• Filter feeders
• Bacteria, detritus,
plankton
Sponge Reproduction
• Hermaphroditic
• Eggs and sperm produced
at different times
• Also budding – asexual
Other Body Systems
• None!!
Sponge Ecology
• Few predators – too
prickly
• Some crabs place on back
• Cavities homes for other
animals
Label
• Workbook pages 49 and
50
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