PreLab1BIO - Lab: Ecology T 3:00 Porifera: Sponges Meaning:...

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Lab: Ecology T 3:00 Porifera: Sponges Meaning : Latin porus,  pore ; Greek  fera , bearing. Characteristics : All are aquatic and most are marine.  Body composed of two  cell layers: outer epidermal and an inner layer of flagellated “collar cells.”  Between the epidermal layer and the layer of collar cells are amoebalike cells.   Sponges are suspension feeders.  Their bodies are perforated with the pores.   Body Symmetry : Radial Symmetry Cnidaria: Jellyfish, Sea Anemones, Corals Meaning : Greek:  knide , nettle; Latin  aria , like. Characteristics:  All aquatic.  Two distinct body forms: the polyp, which is  stationary, and the free-floating medusa.  There are two layers of cells separated  by a gelatinous material that helps support the body.  Cnidarians are carnivorous.  Armed with stinging cells called cnidocytes.  
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PreLab1BIO - Lab: Ecology T 3:00 Porifera: Sponges Meaning:...

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