What feature armed with hooks distinguishes Acanthocephala worms?
Answer
Evertible proboscis
The defining characteristic that sets the phylum Acanthocephala apart is the presence of an evertible proboscis. This structure is specifically armed with numerous rows of hooks. The function of these hooks is crucial to the parasite's survival, as they utilize them to firmly anchor themselves into the intestinal wall of the definitive host. This secure attachment prevents the worm from being passively swept out of the digestive tract and is key to establishing a persistent parasitic infection.
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