Sept 29 - Animals Lecture #7

A reproductive section o each proglottid contains

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- a reproductive “section” o - each proglottid contains both male and female reproductive systems The chain of proglottids is collectively called the strobila, and the holdfast or attachment organ is called the scolex
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Tuesday, September 27, 2011 Animal Lecture # 6 Germinative zone
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Tuesday, September 27, 2011 Animal Lecture # 6 Characteristics – Platyhelminthes no clear defining feature
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Tuesday, September 27, 2011 Animal Lecture # 6 marine, fresh and moist terrestrial habitats turbellarian flatworms are mostly free-living; classes monogena, trematoda and cestoda are entirely parasitic bilateral symmetry; body flattened dorsoventrally adult body 3 layered – triploblastic body acoelomate epidermis may be cellular or syncytial gut incomplete; may be branched; absent in cestodes nervous system consisting of a pair of anterior ganglia with longitudinal nerve cords sense organs – statocysts (organs of blance) and ocelli asexual reproduction by fragmentation most forms monoecious excretory systems consists of 2 lateral canals with branches bearing flame cells (protonephridia) respiratory, circulatory and skeletal systems lacking
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  • Fall '08
  • KELLY
  • Flatworm, Animal Lecture

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