Each polyp has a cup-like shape with a ring of tentacles around a central opening (pharynx) that functions as both(prenominal) mouth and anus. The tentacles are tipped with stinging cells called nematocysts. Corals use the nematocysts to plump for themselves and to capture prey. The body seawall consists of three cell layers: the outback(a) or ectoderm, the middle or mesoderm, and the inner or endoderm. on that point is no frame inside the poly...If you want to prolong a full essay, localise it on our website: Orderessay
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