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Nematoda is a protostomian but not a euc...

Nematoda is a protostomian but not a eucoelomate justify the statement.

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Animals of group Namatoda is protostomian but they have not true coelom/secondary body cavity as it is not lined by mesodermal epithelial layers. Pseudocoel is a reminant of the embryonic blastocoel. Hence they are protostonian. Pseudocoelomata, but not eucoelomates.
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