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The parasite causing sleeping sickness, a flagellated protozoan, is:

APlasmodium
BEntamoeba
CParamoecium
DTrypanosoma
Answer & Solution
Correct answer: D. Trypanosoma
1. Flagellated protozoans may be free-living or parasitic. 2. Trypanosoma causes sleeping sickness. 3. Plasmodium causes malaria. _Source: syllabus Biology, Chapter 2, Biological Classification._
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