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Which of the following organisms will vanish if all the ponds and puddles are destroyed?

  • A.Plasmodium
  • B.Trypanosoma
  • C.Leishmania
  • D.Ascaris

Answer: A

Correct answer: Plasmodium

Plasmodium depends on the Anopheles mosquito, which lays its eggs in standing water, so removing every pond and puddle removes the breeding sites and breaks the transmission cycle. This is why drainage and larviciding are the oldest malaria control measures. Trypanosoma uses the tsetse fly and Leishmania the sandfly, neither of which breeds in open water.

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