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14 Cards in this Set
- Front
- Back
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Phylum Platyhelminthes
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Flatworms, flukes, and tapeworms
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dorsoventral flattening
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Rely on diffusion - no respiratory or circulatory systems
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triploblastic
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animal with all three germ tissue layers (ectoderm, mesoderm, endoderm)
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protonephridia
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simple tubes
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pharynx
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tube for feeding
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statocysts
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cup shaped pit lined with sensitive hairs, bent by tiny weights
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Auricles
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ear-like projections, sensitive to chemicals and touch
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Eye spots
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shallow pits lined with light-sensitive cells
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scolex
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the head.
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proglottids
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series of segments
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phylum rotifera
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rotifers
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corona
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crown of cilia to feed
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mastax
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Muscular pharynx, grinds food
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parthenogenesis
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unfertilized eggs develop directly into adult females (asexual)
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