Cyst around the ookinete is

Options

A. partly secreted by the stomach wall
B. wholly secreted by the stomach wall
C. wholly secreted by the ookinete itself
D. partly secreted by stomach wall and partly by the ookinete itself.

Answer

To answer the question about the cyst around the ookinete, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Context**: The question pertains to the cyst formed around the ookinete, which is a stage in the life cycle of the malaria-causing parasite, Plasmodium. The ookinete is formed in the midgut of the Anopheles mosquito.

2. **Formation of the Ookinete**: The ookinete is formed when the gametes of the Plasmodium fertilize to create a zygote. This zygote then develops into the motile ookinete.

3. **Cyst Formation**: The question specifically asks about the cyst that forms around the ookinete. It is important to note that this cyst is not solely formed by the ookinete itself.

4. **Source of the Cyst**: The cyst around the ookinete is formed partially by the ookinete (the eukaryote) and partially by the stomach wall of the mosquito. This means that both the parasite and the host contribute to the formation of the cyst.

5. **Evaluating the Options**:
- Option A: Partially secreted by stomach wall - Incorrect.
- Option B: Fully secreted by the stomach wall - Incorrect.
- Option C: Fully secreted by the eukaryote itself - Incorrect.
- Option D: Partially secreted by stomach wall and partially by the eukaryote itself - Correct.

6. **Conclusion**: The correct answer is that the cyst around the ookinete is partially secreted by the stomach wall and partially by the eukaryote itself.

### Final Answer:
The cyst around the ookinete is partially secreted by the stomach wall and partially by the eukaryote itself.

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