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25 Cards in this Set
- Front
- Back
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Contains earthworms, leeches, and segmented marine worms |
Annelida |
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Contains snails, clams, squids |
Mollusca |
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Annelids and mollusks have similar larval stages called what |
Trocophore |
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Annelid have distinct what |
Segmentation |
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What are the three classes of annelids |
Oligochaeta Polychaeta Hirudinea |
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Bristle like structures that help with moving |
Setae |
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Leg like structures used for moving |
Parapodia |
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What group are earthworms in |
Oligochaeta |
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Earthworms muscles used to lengthen the worm |
Circular |
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Earthworm muscles used to shorten the worm |
Tubular |
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Earthworms long tubular kidneys |
Nephridia |
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What is an earthworms gizzard used for |
Breaking down organic matter |
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Where does respiration occur in earthworms |
Through their skin |
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What is an earthworms "heart" |
5 aortic arches |
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Can earthworms fertilize themselves |
No |
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The oldest and largest class of annelids |
Polychaetes |
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Examples of polychaetes |
Clam worms and fan worms |
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How do polychaetes move |
Parapodia |
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Example of hirudinea |
Leeches |
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How do hirudineans move |
Have no setae or parapodia |
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Are annelids and mollusks vertebraetes or invertebrates |
Invertebrates |
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Earthworms do what to the soil |
Areate it |
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What are leeches used for |
Removing blood clots |
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Earthworms have what as a hydrostatic skeleton |
Coelom |
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How many nephridians do earthworms have per segment |
2 |
