In Plasmodium , cyst around the ookinete is

Options

A. Partly secreted by the intestinal wall and partly by salivary gland
B. completely secreted by the stomach wall .
C. completely secreted by the ookinete
D. Partly secreted by the stomach wall and partly by the ookinete itself.

Answer

To solve the question regarding the cyst around the ookinete in Plasmodium, we will analyze the options provided and identify the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding the Structure**:
- The ookinete is a motile zygote stage of Plasmodium that develops after fertilization of gametes in the mosquito's gut.

2. **Identifying the Cyst**:
- The cyst that surrounds the ookinete is important for its development and protection as it transitions into the oocyst.

3. **Analyzing the Options**:
- **Option 1**: "Partially secreted by the intestinal wall and partially by the salivary glands."
- This option suggests that both the intestinal wall and salivary glands contribute to the secretion of the cyst. However, this is incorrect.

- **Option 2**: "Completely secreted by the stomach wall."
- This option implies that the stomach wall solely secretes the cyst, which is also incorrect.

- **Option 3**: "Completely secreted by the ookinete."
- This option suggests that the ookinete itself is solely responsible for the secretion of the cyst, which is not accurate.

- **Option 4**: "Partially secreted by the stomach wall and partially by the ookinete itself."
- This option correctly identifies that the cyst is formed from contributions of both the stomach wall and the ookinete.

4. **Conclusion**:
- After evaluating all the options, the correct answer is **Option 4**: "Partially secreted by the stomach wall and partially by the ookinete itself."