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madeline freeman Q4

mmf Q4 animals worms- roundworms

QuestionAnswer
what phylum are roundworms in? phylum nematode
what kind of worms are they? most are decomposers, some are parasites
what is their muscular/skeletal system? no bones, 4 body layers
what is their digestive system? definite system, one-way system that runs through the length of their bodies. has mouth, pharynx, intestines, and anus. parasites get food from host
what's their nervous system? 2 nerve chords that transmit impulses, have ganglia
what's their circulatory system? no formal system, no heart ir formal blood vessels
what's their respiratory system? no formal system
how do they reproduce? sexually, male and female lay many eggs
what kind of symmetry? bilateral
what's their appearance? round, slender bodies
are they the simplest worm? no, they are in the middle not the simplest but not the most complex
Created by: madelinefreeman
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