A Hydra Meaning Those Three Headed Crocodile-Like Dragon?!
No a Hydra is non a pseudocoelmate, acoelomate, or eucoelomate. The basic body plan is a sac with central digestive compartment, the gastrovascular cavity. A single opening functions as mouth and anus. There are 2 variations on this body plan: the sessile polyp and the motile medusa
They both have radial symmetry and they both have tentacle like thingys
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This is NOT Greek Mythology so sorry this type of Hydra does not have 5 heads and breath fire... Well... they have Polyp form of a body. -Polyp- Don't move about. tube shaped body attached to bottom of ocean. With mouth and tentacles faceing (pointing) upward.
The type of body plan a Dugesia has is an acoelomate body. This elongated body lacks internal structures for holding internal organs.
an asymmetrical body plan
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Hydras are acoelomates.
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Hydras most commonly reproduce by budding in which as small juvenile, "polyp", grows on the stalk of it's body. When the polyp has matured, (or when the parent hydra dies), it will break off as a free swimming juvenile. In rare occasions, hydra reproduce sexually.
The Hydra of Greek mythology was a monster with multiple heads and a serpent's body. In biology is the Hydra small animal with a tubular body with a simple adhesive foot. The free end of the body has a mouth opening surrounded by one to twelve thin, mobile tentacles.