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