These organisms use chitinous spicules during reproduction and are sheathed in a hard protein cuticle.
The drug mebendazole is used to treat diseases caused by members of this phylum, such as trichuriasis and ascariasis. These organisms use chitinous spicules during reproduction and are sheathed in a hard protein cuticle. These organisms possess a pseudocoelom and are one of the simplest animals that have a two-way digestive system. Sydney Brenner extensively used one member of this phylum, (*) C. elegans, as a model organism. Many members of this phylum are parasitic helminths, such as hookworms and pinworms. For ten points, name this phylum of nonsegmented roundworms.
The drug mebendazole is used to treat diseases caused by members of this phylum, such as trichuriasis and ascariasis.
Nematoda (or nematodes; accept roundworms until mentioned) &lt;BZ&gt;