One example of animals having a single openin | vedclass

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(D) The correct answer is $D$. In $Fasciola$ (a member of Platyhelminthes),the body plan is known as the 'blind sac' body plan.This means the digestiv

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Fasciola

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(D) The correct answer is $D$. In $Fasciola$ (a member of Platyhelminthes),the body plan is known as the 'blind sac' body plan.This means the digestive system has only a single opening that serves both as the mouth for ingestion (intake of food) and as the anus for egestion (removal of undigested waste).In contrast,organisms like $Octopus$,$Asterias$,and $Ascidia$ possess a complete digestive tract with two separate openings (mouth and anus).

One example of animals having a single opening to the outside that serves both as mouth as well as anus is

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