Ascaris lumbricoides is best described as which of the following?

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Multiple Choice

Ascaris lumbricoides is best described as which of the following?

Explanation:
Ascaris lumbricoides is a nematode, a roundworm that lives in the human small intestine as an adult. It is a large, elongated, nonsegmented worm, which distinguishes it from tapeworms (cestodes) that are flat and segmented and from flukes (trematodes) which are leaf-shaped. Protozoan parasites are single-celled organisms, not worm-like. Thus, the description that fits best is a large intestinal roundworm.

Ascaris lumbricoides is a nematode, a roundworm that lives in the human small intestine as an adult. It is a large, elongated, nonsegmented worm, which distinguishes it from tapeworms (cestodes) that are flat and segmented and from flukes (trematodes) which are leaf-shaped. Protozoan parasites are single-celled organisms, not worm-like. Thus, the description that fits best is a large intestinal roundworm.

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