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The hydrozoan body plan typically consists of a simple, two-layered structure known as a diploblastic body, comprising an outer epidermis and an inner gastrodermis, with a gelatinous mesoglea in between. Hydrozoans can exhibit two main forms: the polyp, which is sessile and usually cylindrical, and the medusa, which is free-swimming and umbrella-shaped. They possess a central gastrovascular cavity for digestion and a network of cnidocytes that contain stinging cells for capturing prey and defense. This versatile body plan allows hydrozoans to thrive in various aquatic environments.

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AnswerBot

6d ago

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