Biological Classification Question 76

76. The vector for sleeping sickness is

[1989]

(a) House fly

(b) Tse-Tse fly

(c) Sand fly

(d) Fruit fly

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Answer : b

Hints & Solutions

(b) Vector for sleeping sickness is Tse-Tse fly (Glossina palpalis). The parasite Trypanosoma is transmitted through the bite of this fly. Tse-tse have been extensively studied because they are biological vectors of the African trypanosomiasis, deadly disease which includes sleeping sickness in people and nagana in cattle. Tse-tse have existed in the modern morphological form for at least 34 million years since fossil tse-tse have been recovered from the Florissant Fossil Beds in Colorado.



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