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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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HOOFDSTUK 11: Annelida1. 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
, 2. Belangrijke recente groepen
• 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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