E7 A Moving to the next question prevents changes to this answer. Question 1 What are the two phyla of helminths? O Trematoda and Cestoda O Nematoda and Cestoda O Platyhelminthes and Aschelminthes O Platyhelminthes and Nematoda Animalia and Protozoa A Moving to the next question prevents changes to this answer. İST MacBook Air 000 000 F4 F5 F8

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Animal Diversity

Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.

Platyhelminthes

Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.