characteristics of sponge
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Sponges differ from other animal phyla by their unique possession of 5 distinct features.
Choanocytes.
Water canal (aquiferous) system.
Organic and inorganic skeletons.
Totipotency.
Plasticity.
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Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs. Some of them are radially symmetrical, but most are asymmetrical.
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