Worms

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Developed by:Alexandra and Cristina.
worms-istock4228622.jpg

Characteristics:Have long, soft bodies.

  • Some are cylindrical, and others are flat.
  • Some are aquatic, and others are terrestrial.
  • Many are parasites.

Types:

  • Earthworm
Earthworm.jpg
  • Planaria

planaria.jpg
  • Tapeworm

tapewormsm_2.jpg

More Information:

The term "soft-bodied organism" is used to describe animals without skeleton, roughly corresponding to the group Vermes as proposed by Carl von Linné. All animals have muscles, but since muscles can only pull, never push, a number of animals have developed hard parts that the muscles can pull on, commonly called skeletons. Such skeletons may be internal, as in vertebrates, or external, like in arthropods.

References:

http://en.wikipedia.org/wiki/Soft-bodied_organisms