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Biology · 2024 · 4 marks

CBSE 2024 · Region 5 · Set 1 · Q30

Read the following passage and answer the questions that follow: "Mosquitoes are drastically affecting the human health in almost all the developing…

Read the following passage and answer the questions that follow : "Mosquitoes are drastically affecting the human health in almost all the developing tropical countries. Different species of mosquitoes cause very fatal diseases so much so that many humans loose their life and if they survive, are unable to put in productive hours to sustain their life. With the result the health index of the country goes down."
(a)
Name the form in which Plasmodium gains entry into (i) human body (ii) the female Anopheles body.
(b)
Why do the symptoms of malaria not appear in a person immediately after being bitten by an infected female Anopheles ? Give one reason. Explain when and how do the symptoms of the disease would appear.
OR
(b)
Explain the events which occur within a female Anopheles mosquito after it has sucked blood from a malaria patient.
(c)
Name a species of mosquito other than female Anopheles and the disease, for which it carries the pathogen.
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