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OpenStudy (hanah):

sponges are sessile.How do they get food while staying at one place?

OpenStudy (hanah):

@mayankdevnani help me about this question

OpenStudy (anonymous):

Sponges are filter feeders. As the water passes through their porous bodies they collect small particles. Some is waste, but some is food. That is what they eat :) Because the water is ALWAYS moving, they have a constant supply of food.

OpenStudy (hanah):

thanx @MathBlonde

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