The scientific name for a segmented worm is annelid. This is actually a phylum of worms - all segmented or ringed on their bodies. It includes animals like leeches, ringworms, and earthworms. Each segmented part contains the same organs. These could be a heart, lungs, stomach, etc. Anything that the worms might need to live and get from place to place. Speaking of locomotion, they use parapodia.
The parapodia are basically two little hairs - one on each side of the body - that are used by the worms to propel itself to the location it wants to go. Annelids often reporduce sexually, but some can produce assexually. Those that have been studied, however, favor sexual reproduction. They often make little nests or something of the kind for the their eggs.
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