Q: What has a pseudocoelom and hydrostatic skeleton?


Read this paragraph and choose the correct option from the provided answers:

Roundworms make up the phylum Nematoda. They have a pseudocoelom and hydrostatic skeleton. Their body is covered with tough cuticle. Free-living roundworms are found mainly in freshwater habitats. Parasitic roundworms have a variety of hosts, including humans.

 Choices:

- vertebrates

- omnivores

- gymnosperms

- roundworms


A:
roundworms