Sponges... w A brief introduction.... SPONGES… – Are in the phylum Porifera. – Aren't very animal-like - don't have eyes, or move. – Don't have true. - ppt download
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Sponges Sponges, phylum Porifera, are invertebrates made up of two cell layers. Most sponges are asymmetrical. They have no tissues, organs, or organ. - ppt video online download
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Digestive cell types and tissues of choanoflagellates (a), sponges (b),... | Download Scientific Diagram
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