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Sporozoites of malarial parasite enter...

Sporozoites of malarial parasite enter

A

Erythrocytes of humans

B

Liver cells of humans

C

Stomach of Mosquito

D

Salivery gland of Mosquito.

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### Step-by-Step Solution: 1. **Understanding the Life Cycle of the Malarial Parasite**: The malarial parasite, primarily Plasmodium species, has a complex life cycle involving two hosts: the female Anopheles mosquito and humans. 2. **Identifying the Role of Sporozoites**: The sporozoites are the infectious form of the malaria parasite that is injected into the human body when an infected mosquito bites. 3. **Determining the Entry Point**: After entering the human bloodstream, sporozoites do not infect red blood cells (erythrocytes) immediately. Instead, they travel to the liver. 4. **Infection of Liver Cells**: Within approximately 30 minutes of entering the bloodstream, sporozoites penetrate the liver cells (hepatocytes) using lytic enzymes secreted from their organelles. 5. **Conclusion**: Therefore, the sporozoites of the malarial parasite enter the liver cells of humans, where they undergo further development and multiplication before eventually infecting red blood cells. ### Final Answer: The sporozoites of the malarial parasite enter the liver cells of humans. ---
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