You are watching: What happens if you cut a worm in half

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CategoriesNooks and also cranniesYesteryearSemantic enigmasThe body beautifulRed tape, white liesSpeculative scienceThis sceptred isleRoot of all evilEthical conundrumsThis sporting lifeStage and also screenBirds and also the bees BIRDS and also THE BEESIf you reduced a worm in two does it end up being two worms? NO, the two halves differ. The full-grown garden worm, Lumbricus terrestris, has a body consisted of of around 150 small rings, each v hair-like, rearward barbs the make it tough to traction the worm from its hole, or come swallow in reverse. The mouth and very first 31 rings type the spicy front. Then comes a thickened region, rings 32 come 37, the clitellum, supplied in sex: worms might be hermaphrodite, but pairs sign up with in mutual "69s" on wet nights. The remainder of the human body is uniform until it flattens the end at the anus. Reduced a worm in half (please don"t), and the front typically grows a new, if shorter, tail end. For the old tail, shorn of an essential organs, it"s the end; but that"s no the finish of the tale. Lumbricus and also the various other two dozen varieties of brother earthworms (1,500 worldwide) are advanced tillers the the soil. However, in pond and stream over there swims a an ext primitive worm, black color and half an customs long: the flatworm (planaria). Reduced one in two: the head grow a tail, the tail a head. Cut one in three: even the middle grows both brand-new head and tail. Each part become entirety is thought to lug the memory of its earlier entity; therefore beware, if you open this deserve to of worms they may seek revenge. And they"re carnivorous. Invoice Allen, Oxshott, Surrey. I"d like to know much more about those carnivorous flatworms please. Bill Allen native Oxshott, Surrey - might you elaborate? Gill Holmes, Twickenham, UK include your answer

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