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Dictionary » P » Polyp Polyppolyp 1. (Science: pathology) growth, usually benign, protruding from a mucous membrane. 2. (Science: plant biology) The sessile stage of the Cnidarian life cycle, the cylindrical body is attached to the substratum at its lower end and has a mouth surrounded by tentacles bearing nematocysts at the upper end, hydra and the feeding polyps of the colonial Obelia are examples. ![]()
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Results from our forumRe: Respiration of a polyp (hydra) Hydra are diploblastic, i.e. they have only two cell layers. Respiration is by simple diffusion.
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Re: animal with the longest lifespan... this immortal being so small hehe : Turritopsis nutricula or immortal jellyfish is a hydrozoan whose medusa, or jellyfish, form can revert to the polyp stage after becoming sexually mature. It is the only known case of a metazoan capable of reverting completely to a sexually immature, colonial ...
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Why Cnidaria swim?... this is one of them: What is "The use" of a swimming stadium among Cnidaria (and also swamps) ? I think the answear is that becouse of a polyp- colony is single- sexual, they have to produse medusa, if they want to get some kind of gentic variation. Am i getting this right, or can somone ...
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Stomach bloating and weight gainWhat was the size of the polyp, >10mm ? If so I would wonder why this did not raise concerns with the doctors. Although I think this is unrelated to any change in body size, It might cause the severe pains which prompted you to visit ...
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