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Samenvatting hoofdstuk 11: Annelida

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Volledige samenvatting van hoofdstuk 11 gebaseerd op lesnotities en de cursus

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  • November 1, 2023
  • 6
  • 2022/2023
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HOOFDSTUK 11: Annelida

1. Inleiding en diagnose

Morfologie

- Gesegmenteerd lichaam
- Huid  BEDEKT MET dunne cuticula

Fysiologie

- VOLLEDIG  spijsverteringskanaal
- Centraal zenuwstelsel
- Parige ganglia
- Ventrale zenuwen
- Kopganglion  dorsaal VAN  oesophagus
- Gasuitwisseling  DOOR  huid
- GESLOTEN  bloedvatenstelsel
- Protonephridia of metanephridia
- Circulaire en overlangse  spieren

Voortbeweging

- Kruipend
- Zwemmend (parapodia, peristaltiek of golvend)
- Coeloomvocht  FUNCTIONEERT ALS  hydrostatisch skelet

Voortplanting

- Gescheiden geslacht of hermafrodiet
- Interne of externe  bevruchting
- SOMS  aseksuele knopvorming of deling

Ontwikkeling

- Indirect (trochoforalarve) of direct

Habitat

- MEESTAL  marien
- OOK  zoetwater en terrestrisch

Grootte

- Volwassen dier  < 1 mm tot > 3 m

Diversiteit

- Ongeveer 12.000 beschreven recente soorten

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• Classis Polychaeta

- ONTWIKKELDE  coeloom

- Segmenten MET parapodia en setae

- ONTWIKKELD  prostomium

- MEESTAL  gescheiden geslachten

- MEESTAL  marien




• Classis Hirudinea

- GEREDUCEERDE  coeloom
- GEEN  parapodia of setae
- Mond- en staartzuignap
- Hermafrodiet
- GEEN  vrije larve




• Classis Oligochaeta

- ONTWIKKELD  coeloom
- GEEN  parapodia
- WEINIG  setae
- WEINIG ONTWIKKELD prostomium
- Hermafrodiet
- Directe ontwikkeling
- Terrestrisch of zoetwaterbewonend

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