Stage in which haemozoin is liberated

Options

A. Sporozoite
B. Merozoite
C. Trophozoite
D. Amoeboid.

Answer

### Step-by-Step Solution:

1. **Understanding Hemozoin**: Hemozoin is a waste product produced during the digestion of hemoglobin by certain blood-feeding parasites, such as the malaria-causing Plasmodium. It is formed to detoxify free heme, which is toxic to the parasite.

2. **Life Cycle of Plasmodium**: The life cycle of the malaria parasite begins when a female Anopheles mosquito bites a human, injecting sporozoites into the bloodstream.

3. **Sporozoite Stage**: The sporozoites travel to the liver, where they invade liver cells and develop into schizonts. This stage does not involve the production of hemozoin.

4. **Schizont Stage**: The schizonts undergo asexual reproduction and eventually rupture, releasing merozoites into the bloodstream.

5. **Merozoite Stage**: It is during the merozoite stage that the parasite invades red blood cells and begins to digest hemoglobin, leading to the production of hemozoin. Therefore, hemozoin is liberated during the merozoite stage.

6. **Conclusion**: The correct answer to the question is that hemozoin is liberated during the merozoite stage.

### Final Answer:
**Merozoite stage**

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