Notes on Annelida Basic Facts

Notes on Annelida Basic Facts - Basic Facts 1 ~13,000...

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Basic Facts 1. ~13,000 species 2. 0.5mm-3m 3. Majority marine, but many terrestrial 4. Segmental body plan organization 5. Diverse feeding strategies (raptorial, saprophagous, filter feeding) 6. Lack of a respiratory system 7. Annelida represent a comparatively small phylum Subphylum Hirundinea (leeches) 1. 1. Most freshwater, few terrestrial and marine 2. 2. Most predatory or scavenger
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Unformatted text preview: 3. 3. No setae 4. 4. No parapodia 5. 5. Reproduction: hermaphroditic w/crossfertilization common (as in earthworms) • • Subphylum Oligochaeta (earth worms) 1. 1. Feed on soil, digest detritus & microbes 2. 2. Lack eyes 3. 3. Have fewer setae compared to polychaetes 4. 4. Lack parapodia 5. 5. Although hermaphroditic, always reproduce by cross-fertilization...
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  • Spring '10
  • Kant
  • Annelid, 0.5mm, Subphylum Oligochaeta, Subphylum Hirundinea, comparatively small phylum

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