A true coelom is absent in which phylum? | vedclass

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(A) In phylum $Nematoda$ (also known as $Nemathelminthes$ or roundworms),a true coelom is absent.Instead,they possess a $pseudocoelom$,which is a body

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Nematoda

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(A) In phylum $Nematoda$ (also known as $Nemathelminthes$ or roundworms),a true coelom is absent.Instead,they possess a $pseudocoelom$,which is a body cavity that is not lined by mesoderm (peritoneum).In contrast,phyla such as $Annelida$,$Echinodermata$,and $Mollusca$ possess a true coelom,which is a body cavity derived from the mesoderm and lined by the peritoneum.

$A$ true coelom is absent in which phylum?

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