Which of the following organisms has only a s | vedclass

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(D) Organisms with a single opening for both ingestion and egestion possess an incomplete digestive system (blind sac body plan).Liver fluke ($Fasciol

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Liver fluke

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(D) Organisms with a single opening for both ingestion and egestion possess an incomplete digestive system (blind sac body plan).Liver fluke ($Fasciola$ $hepatica$),which belongs to the phylum $Platyhelminthes$,exhibits this type of digestive system.In contrast,$Octopus$ (Mollusca),$Asterias$ (Echinodermata),and $Ascidia$ (Chordata/Urochordata) possess a complete digestive system with two separate openings (mouth and anus).

Which of the following organisms has only a single opening that serves as both the mouth and the anus?

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