The two major groups of helminths are which of the following?

The two major groups of helminths are indeed classified as roundworms and flatworms. Roundworms are also known scientifically as nematodes, while flatworms are referred to as platyhelminths. This classification is fundamental in parasitology and helps differentiate between the various life cycles, morphological features, and modes of transmission of these organisms.

Roundworms typically have a cylindrical body and can be free-living or parasitic. They are known for having complex life cycles, often involving multiple hosts. Flatworms, on the other hand, have a flattened body structure and are often parasitic, with some members like tapeworms (cestodes) and flukes (trematodes) playing significant roles in various diseases.

The other groups mentioned, such as filariasis and schistosomiasis, are diseases caused by specific types of helminths but do not represent the high-level taxonomic classification. Cestodes and nematodes are direct categories that could also be used to define these groups but are more specific compared to the broad terms roundworms and flatworms. Proglottids refer to the segments of tapeworms and do not represent a separate group of helminths, making that option less