Assertion :In African sleeping sickness, the parasite is transmitted by bloodsucking tse-tse fly. Reason: In kala-azar, the parasite is transmitted to humans by sand fly.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Trypanosomiasis or African sleeping sickness is caused by a protozoan Trupanosoma gambiense. The parasite is transmitted by blood sucking tse-tse' fly (Glossina palpalis).
Leishmaniasis or kala-azar is a tropical disease caused by the parasitic protozoan Leishmania donovani. The parasite, is transmitted to human by sand flies (Phlebotomus).
So, the correct answer is 'if both Assertion and Reason are true but Reason is not the correct explanation of Assertion'.

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