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by Violunatic on June 15th, 2005

Violunatic

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If you cut off the tail end of a worm, will it grow back?

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  • by wickedwillie on June 22nd, 2005

    wickedwillie

    Depends on the type of worm and where you cut it. The common earthworm is a relatively simple organism. It lives a simple life crawling through the ground eating rotting organic matter. It has relatively simple digestive, circulatory, and nervous system.
    One of the most obvious characteristics about the earthworm is that its body is segmented. Often we refer to the location of internal organs in a worm by the number of segments from the mouth they are located. For instance, the pharynx is located three to five segments from the mouth. After about the 21st segment from the mouth many of the internal organs of the earthworm repeat. These organs repeat about every twenty-one segments. The longer a worm is, the more sets of the same organs it can have.
    As long as a worm is cut so that it has at least one set of these repeating organs, the pieces of the worm can heal and survive.

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