Which of the following phyla is the first to | vedclass

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(C) The phylum $Aschelminthes$ (also known as $Nematoda$ or roundworms) is the first group in the animal kingdom to exhibit a complete digestive syste

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Aschelminthes

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(C) The phylum $Aschelminthes$ (also known as $Nematoda$ or roundworms) is the first group in the animal kingdom to exhibit a complete digestive system.This means they possess a distinct alimentary canal with both a mouth and an anus.In contrast,$Platyhelminthes$ have an incomplete digestive system (a single opening serving as both mouth and anus),while $Protozoa$ are unicellular and do not have a digestive system in the multicellular sense.

Which of the following phyla is the first to possess a complete digestive system?

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