Question

Nematode is a protostomian but not a coelomate. Justify the statement.

Answer 1

Phylum Nematode or round worms are protostomian (blastopore is developed into mouth in developmental stage) but not a ceolomates. Rather Nematodes are included in pseudocoelomates. The pseudocoelom is a type of body cavity that develops from the blastocoel and is not fully lined by mesoderm, in the true coelom. This pseudocoelom is a fluid filled structure that is in direct contact with the muscles and internal organs in Nematode.

Answer 2

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⭐. In nematoda the blastophore b.coms the mouth and hence protostomia .

⭐. The coelom is not true coleom