Chloe Kim #1 of the United States competes in the FIS World Cup 2018 Ladies Snowboard Halfpipe final during the Toyota U.S. Grand Prix on December 9, 2017 in Copper Mountain, Colorado. Matthew StockmanâGetty Images.
The phylum name Platyhelminthes literally means flatworms.. Members of this phylum are soft, thin-bodied, leaf or ribbonlike worms, including the familiar planaria of ponds and streams, as well as the flukes and tapeworms parasitic in human and other animal bodies.
Platyhelminthes. Members of the phylum Platyhelminthes are flatworms, such as the planarian. Grubs and tapeworms are other examples of flatworms. Flatworms display bilateral symmetry; that is, the left and right halves of the body are mirror images of one another.Another characteristic of the platyhelminthes is cephalization.Cephalization means that one end of the animal functions as a head.The âheadâ contains a mass of nerve cells that acts as a brain and specialized regions for sensing light, chemicals, and pressure.nother characteristic of the platyhelminthes is cephalization.Cephalization means that one end of the animal functions as a head. The âheadâ contains a mass of nerve cells that acts as a brain and specialized regions for sensing light, chemicals, and pressure.