Kala-azar is caused and transmitted respectively by

  • A
    Leishmania and Phlebotomus
  • B
    Trypanosoma and sand fly
  • C
    Leishmania and tse-tse fly
  • D
    Trypanosoma and Glossina palpalis

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Which stage of $Plasmodium$ in humans obtains nutrition from the blood?

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