General Characteristics of Phylum Porifera

• An example is the sponge

• It's common name is the " pore-bearing " animal.
• The body develops from two (2) cell layers
• It is asymmetrical
• It's a free-living organism
• Body is covered with pores
• They are sessile
• They have special cells for digestion and support.
• They are the simplest of all animals.
• Reproduction is both a-sexual and sexual.
• They are filter feeders
• Digestion is intracellular
• structural elements are spicules and spongin
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