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NONE, majority of them are parasites. However, in terms of research, scientists are interested in its ability to regenerate. Basically, if it head, tail, or just the mid portion of the body is separated, then those separated parts can re-grow rest of the body parts. Class Trubellaria has a little economic importance because it mainly feeds on small algae and dead animals. Class cestoda helps digest cellulose in humans, but can cause weight lose in humans unwillingly...... that's all I know!

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14y ago

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