which digestive system is in Phylum archelminthes?
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The digestive canal is straight and complete with a mouth, straight non-muscular intestine, and anus, pharynx muscular and highly specialized. Respiratory and circulatory systems are absent. Excretory system includes a system of canals, protonephridia (in some) for osmoregulation.
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The digestive system is complete, with a mouth and anus. The mouth in these organisms is terminal and is surrounded by lips bearing sense organ. Amphids and papillae are the main sensory organs. The nervous system consists of a nerve-ring that encircles the oesophagus.
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