nematoda is another phylum.help its for biology test tommorow
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phylum nematodes :
* body is cylindrical and dont divide into rings
* have limited or no body organs
* unisexual
phylum platyhelminthes :
* flat bodies
* body systems are limited or absent
* alimentary canal is simple
phylum annelida ( earth worm ) :
* body is segmented
* well developed body systems
* have closed circulatory , excrtory and nervous systems
* body is cylindrical and dont divide into rings
* have limited or no body organs
* unisexual
phylum platyhelminthes :
* flat bodies
* body systems are limited or absent
* alimentary canal is simple
phylum annelida ( earth worm ) :
* body is segmented
* well developed body systems
* have closed circulatory , excrtory and nervous systems