All eukaryotic unicellular organism belong to

Options

A. Monera
B. Protista
C. Fungi
D. Bacteria

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks about the classification of all eukaryotic unicellular organisms.

2. **Identify the Options**: The options provided include Monera, Protista, Fungi, and Bacteria.

3. **Analyze Option 1 - Monera**: Monera consists of prokaryotic organisms, which have a primitive cell structure and lack a defined nucleus. Since the question specifies eukaryotic organisms, Monera is not the correct option.

4. **Analyze Option 2 - Protista**: Protista includes unicellular eukaryotic organisms. These organisms have a well-defined nucleus and are classified under this kingdom. Therefore, this option fits the criteria of the question.

5. **Analyze Option 3 - Fungi**: While some fungi, like yeast, are unicellular, the majority are multicellular. The question specifies "all" eukaryotic unicellular organisms, so this option is not correct.

6. **Analyze Option 4 - Bacteria**: Bacteria are prokaryotic organisms and belong to the Monera kingdom. Since they are not eukaryotic, this option is also incorrect.

7. **Conclusion**: Based on the analysis, the correct answer is that all eukaryotic unicellular organisms belong to the kingdom Protista.

**Final Answer**: All eukaryotic unicellular organisms belong to Protista.

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