nutrition in porifera
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They rely on keeping up a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges have a unique feeding system among animals. Instead of a mouths they have tiny pores (ostia) in their outer walls through which water is drawn...
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Answer:They rely on keeping up a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges have a unique feeding system among animals. Instead of a mouths they have tiny pores (ostia) in their outer walls through which water is drawn.
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