Protista includes-

Options

A. Unicellular prokaryotes
B. Unicellular eukaryotes
C. Bacteriophages
D. B.G.A

Answer

**Step-by-Step Solution:**

1. **Understanding Protista**: The kingdom Protista is a diverse group of organisms that are primarily characterized by being eukaryotic. This means that the cells of these organisms have a well-defined nucleus.

2. **Identifying Characteristics**: Organisms in the Protista kingdom are mostly unicellular, meaning they consist of a single cell. This is a key characteristic that helps distinguish them from other kingdoms.

3. **Types of Organisms in Protista**:
- **Protozoa**: These are animal-like protists that can be found in this kingdom. They are typically unicellular and exhibit characteristics similar to animals.
- **Algae**: These are plant-like protists that can perform photosynthesis. They can be unicellular or multicellular, but many are unicellular.
- **Slime Molds**: These are fungus-like protists that can exist as single cells but can also aggregate to form multicellular structures.

4. **Analyzing the Options**:
- **Option A**: Unicellular prokaryote - This is incorrect because prokaryotes (like bacteria) do not belong to the Protista kingdom.
- **Option B**: Unicellular eukaryote - This is correct as it aligns with the characteristics of organisms in the Protista kingdom.
- **Option C**: Bacteriophages - These are viruses that infect bacteria and are not classified under Protista.
- **Option D**: Blue-green algae - These are actually cyanobacteria, which are prokaryotic and do not belong to the Protista kingdom.

5. **Conclusion**: Based on the analysis, the correct answer is that Protista includes unicellular eukaryotes.

**Final Answer**: Protista includes unicellular eukaryotes.

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