The Tube-within-a-Tube body plan is shown by: | vedclass

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Question

(C) In the $Tube-within-a-Tube$ body plan,the animal's body consists of two tubes: one formed by the body wall and the second formed within it by the

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Aschelminthes (Nemathelminthes)

Vedclass · Answer

(C) In the $Tube-within-a-Tube$ body plan,the animal's body consists of two tubes: one formed by the body wall and the second formed within it by the digestive tract.This type of body plan is first observed in the phylum $Aschelminthes$ and continues in all higher phyla up to $Chordata$.In contrast,$Coelenterates$ and $Platyhelminthes$ exhibit a $Blind-sac$ body plan,where there is only one opening for both ingestion and egestion.

The $Tube-within-a-Tube$ body plan is shown by:

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