BIOL 227 Study Guide - Final Guide: Parapodium, Sea Cucumber, Mandibulata
9 Dec 2015
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Waste + gametes spicule choanocytes or atrium choanocytes in choanocyte chamber (dark pink) Food particles get trapped in the choanocytes located in the choanocyte chambers. Gametes are released within the spongocoel and propelled through the osculum by the water current that is generated by the choanocytes. Bud aboral surface tentacles oral surface gastrovascular cavity gonad. Unlike hydra, obelia has a tree- like structure with multiple branches that hold various different structures. Resembles more like hydra due to its budding polyp body form. obelia specimen. Cnidocytes are located on the epithelial layer, because they need to be located on the exterior of the hydra"s tentacles in order to sting other organisms for defence or predation. Cnidaria: aurelia (scyohozoa) oral arms mesoglea tentacles gonads epidermis mouth gastric pouch. Compare & contrast aurelia with hydra aboral surface. The main difference between aurelia and hydra is respectively their. Furthermore, aurelia (medusa) is typically mobile unlike hydra (polyp) oral surface.
