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Published byEvangeline Wilkerson Modified over 9 years ago
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The Nematoda (round worms)
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Major Characteristics Animal Characteristics Cylinderical and bilateral Triploblastic Pseudocoelomate Complete digestive system Tough cuticle
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Body Plan Nematodes are composed of an ectoderm, mesoderm, endoderm making them triploblastic They contain a false cavity because it is located between the endoderm and mesoderm
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Movement Round worms contain longitudinal muscle that run parallel to the anterior/posterior axis Contraction and relaxation of muscles on opposites sides of the animal create the characteristic whip like serpentine movement
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Feeding The nematode have a complete digestive system with a mouth and anus One way travel of nutrient allows for divergence and specialization of digestive function along the digestive tract
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Parasites Nematode parasites reproduce at a high rate, an enzyme resistant cuticle and eggs, with encysted larvae They include intestinal worms, the pork worm (trichinosis), and filarial worms (elephantiasis)
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