BIO 2135 Quiz: Platyhelminthes Keywords
21 Oct 2015
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Acetabulum: one of two suckers found on the digenic flukes (trematodes). The oral sucker surrounds the mouth, and the acetabulum is located on the ventral surface. Acoelomate: triploblastic animals that do not have an internal body cavity. Although the term could be applied to other lower phyla, it is most accurately used with the triploblasts rather than diploblasts. Adhesive gland: part of the dual gland adhesive system unique to flatworms. Auricle: a pair of lateral, ciliated, chemosensory protrusions on the sides of a flatworm"s head. Bilateral symmetry: in organisms that have a bilaterally symmetric organization there is only one way that the plane of symmetry can pass through the longitudinal axis and create two identical halves. Bilateria: a major division of the animal kingdom embracing all forms with bilateral symmetry. Biradial symmetry: the organism appears radially symmetric but at least one set of structures is paired.
