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12 Cards in this Set
- Front
- Back
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What is the generic name of animals belong to Phylum Nematoda? |
Roundworms |
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Which superphylum does Phylum Nematoda belong to? Why? |
Superphylum Ecdysozoa; because the animals have a cuticle- a chitin covering for support. |
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Nematodes are all considered what? |
Parasites |
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Nematodes are the only ones with what? |
Pseudocoeloms |
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Describe nematodes' respiratory mechanism. Why do they use this method? |
Diffusion; becuase they have large surface areas |
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Describe nematodes' circulatory mechanism. |
None |
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Describe nematodes' nitrogen waste removal mechanism. |
By nephridium |
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Describe nematodes' nervous mechanism. |
They have a nerve ring and a double ventral nerve cord |
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Describe nematodes' muscular mechanism. |
They have longitudinal muscles |
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How do nematodes maintain internal stability? |
They do not have internal stability. |
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How do nematodes reproduce? |
Sexually; separate animals have separate sexes |
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Name 4 examples of nematodes, and describe each. |
1. Trichinella sp.- lives inside cyst in pig muscle 2. C. elegans- microscopic 3. Ascaris sp.- very important human intestinal parasite; common in far east (China) 4. Hookworms- burrow in human feet; cause Ground Itch |
