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Phylum Platyhelminthes
Tuesday, 16 August 2016 • 01:00 • 0 comments
Phylum Platyhelminthes
Unique characteristics of Phylum Platyhelminthes

Based on evolutionary relationship of animals:
Level of cell organization    : Organ
            Germ layers                       : Triploblastic
Body plan(symmetry)            : Bilaterally symmetrical
Body cavity                     : Acoelomate                
Segmentation : Unsegmented
-
Excretory system is protonephridia(2 lateral canals with branches bearing flame cells)
- Incomplete digestive system(has mouth but no anus)
Classes of Phylum Platyhelminthes:

·    Class Cestoda(tapeworm,Taenia sp.)
·    Class Trematoda(liver fluke,Fasciola sp.)
·    Class Turbellaria(planaria,Dugesia sp.)

Fasciola sp.



Taenia sp.


Dugesia sp.


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