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25 Cards in this Set
- Front
- Back
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Round worms have what kind of body covering |
Outer body covering with flexible cuticle |
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Most species are dioecious and show sexual dimorphism |
Roundworms |
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Phylum nematoda |
Roundworms |
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Use renette cells for excretion |
Roundworms |
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Have sense organs called amphids |
Roundworms |
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No larval stage ; usually 4 juvenile stages are separated by a molting |
Roundworms |
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Enormous ecological importance |
Roundworms |
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Includes hookworms |
Roundworms |
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Includes trichinella |
Roundworms |
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Includes ascaris |
Roundworms |
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Exhibit bilateral symmetry |
Roundworms and flatworms |
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Triploblastic |
Roundworms and flatworms |
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Most species are monoecious |
Flatworms |
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Least complex of all organisms |
Flatworms |
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Larval stage often occupy an intermediate host before reaching adulthood in the definite host |
Flatworms |
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Phylum platyhelminthes |
Flatworms |
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Use protonephridia for excretion |
Flatworms |
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External body covering called tegument or neodermis |
Flatworms |
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Have a blind guy with a single opening |
Flatworms |
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Acoelomates which lack a true body cavity |
Flatworms |
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Head is often modified for attachment to the host |
Flatworms |
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Includes planaria, dugesia, monogenetic and digenetic flukes |
Flatworms |
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Include tapeworms |
Flatworms |
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How long does it take an adult worm to push out of the skin |
One year |
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Ocelli in some species |
Flatworms |
