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NEET 2020 · BiologyPrevious Year Question

The infectious stage of Plasmodium that enters the human body is:

Answer: (D) Sporozoites. Answer: (D) Sporozoites Solution: Plasmodium enters the human body in the sporozoite stage (the infectious form) through the bite of an infected female Anopheles mosquito.

  1. A.Female gametocytes
  2. B.Male gametocytes
  3. C.Trophozoites
  4. D.Sporozoites✓

Correct Answer

(D) Sporozoites

Solution & Explanation

Answer: (D) Sporozoites Solution: Plasmodium enters the human body in the sporozoite stage (the infectious form) through the bite of an infected female Anopheles mosquito. These then multiply in liver cells before attacking RBCs. Why others are wrong: Gametocytes are taken up by the mosquito from human blood and develop further inside the mosquito; trophozoites are an intracellular feeding stage, not the form that initially enters the human body. NCERT Reference: NCERT Ch7, p.131, lines 34-35: "Plasmodium enters the human body as sporozoites (infectious form)" (Answer per official/NCERT key.)

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