The main source of amoebic dysentery is:

  • A
    Contaminated food and water
  • B
    Water and food contaminated by faecal matter
  • C
    Water and food contaminated by urine
  • D
    Water and food contaminated by polluted air

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$S$ - Statement: The $Anopheles$ mosquito is responsible for malaria.
$R$ - Reason: $Plasmodium$ uses both humans and the female $Anopheles$ mosquito as hosts.

The infective stage of $Entamoeba$ $histolytica$ is:

Which species of Plasmodium causes the most serious and often fatal type of malaria?

The life cycle of $Plasmodium$ is:

Which species of $Plasmodium$ has the longest incubation period?

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