Specimen from Phylum Porifera
Look for spicules. They make up the structure or support. When you look for them, you may see them needle shaped, "multipronged jack" shaped, hooked,or even barbed. This is what is used to classify sponges.
You should have drawn what you saw on the sponge slide.
You should also have seen a sample of the natural sponge in class on a slide.
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