Each polyp has a cup-like fabricate with a besiege of tentacles around a central enterprise (pharynx) that functions as both mouth and anus. The tentacles are tipped with burn cells called nematocysts. Corals use the nematocysts to keep themselves and to capture prey. The body wall consists of troika cell layers: the satellite or ectoderm, the middle or mesoderm, and the versed or endoderm. in that respect is no skeleton internal t...If you want to get a full essay, order it on our website: OrderEssay.net
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