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(it would be false to say that all flatworms are parasitic--the idiot that wrote that wasn't so smart, so I had to change that-- because the PLANARIAN-for example, is flatworm and that is a harmless little critter)

~round worms are ROUND

~flat worms are FLAT

~Round worms have 2 body openings (mouth & anus)

*random fact: 1/2 of all roundworms are PARASITIC, and 50 species affect humans**

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Planarians are parasitic segmented worms?

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What is the phyla of a worm?

It depends what type of warm you are referring to. Flatworms belong Platyhelminthes Tubeworms belong to Nematodes and Segmented worms belong to Annelids Centipedes and Millipedes are not worms. They belong to the Arthropod Phylum.


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