Question
Biology Question on biological classification
Causal organisms of sleeping sickness and kaia-azar belong to which of the following groups of protozoan protists?
A
Amoeboid protozoans
B
Flagellated protozoans
C
Ciliated protozoans
D
Sporozoans
Answer
Flagellated protozoans
Explanation
Solution
Trypanosoma gambiense, causes Gambian sleeping sickness. The parasite is transmitted by blood sucking tse-tse fly, Glossina palpalis. Leishmania donovani causes kala-azar or dum-dum fever (= visceral leishmaniasis). The parasite is transmitted by sandfly, Phlebotomus argentipes and other species. Causal organisms of both diseases belong to flagellated protozoans of Kingdom Protista.