![]() Sponges function more like a colony of unicellular organisms. ![]() No respiratory or circulatory system! Each cell is responsible for it’s own food/waste etc. The host dies from this or becomes more susceptible to predation.The sponges bore into corals or shelled animals.Figure 6: Choanocytes Parasitic Sponges – Boring Sponges! Food enters the cell through phagocytosis ( Same as many unicellular organisms such as amoebas)Ĭhoanocytes ( Collar Cells ) – Cells surrounding the “collar” that strains food from the water.The spongocoel and canals are lined with choanocytes which have flagella (whip-like tails) which pull food inward.They pull water into the spongocoel (middle cavity of a sponge) through pores. ![]()
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