Multiple choice

Suppose you want trophozoite stages in the life cycle of Plasmodium. Where will you look for it?

  1. In the liver cells of man

  2. In the erythrocytes of man

  3. In the plasma of man

  4. In the salivary glands of female Anopheles
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B Correct answer
Explanation

The trophozoite stage of Plasmodium develops within human erythrocytes (red blood cells) after merozoite invasion. Here, the parasite multiplies asexually, consumes hemoglobin, and develops into schizonts. The liver cells contain the exo-erythrocytic stages (sporozoites and merozoites), while the salivary glands of mosquitoes contain sporozoites, not trophozoites.

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