In hot summer and cold winter, the number of malaria cases as well as Anopheles declines. Reappearance of malaria in humid warm conditions is due to
A
Surviving malarial parasite in human carriers
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B
Surviving sporozoites in surviving mosquitoes
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C
Monkeys
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D
Mosquito larvae in permanent waters.
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Solution
The correct option is D Mosquito larvae in permanent waters.
In hot summer and cold winter, the number of malaria cases as well as Anopheles declines. The reappearance of malaria in humid warm conditions is due to Mosquito larvae in permanent waters.
So, the correct answer is 'Mosquito larvae in permanent waters'.