Which set of 'species' names belong to same genus?

Options

A. histolytica and coli
B. gingivalis and proteus
C. proteus and coli
D. vivax and coli

Answer

To determine which set of species names belong to the same genus, we will analyze the options provided in the question. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a set of species names that belong to the same genus. A genus is a rank in the biological classification (taxonomy) that is one level above species.

2. **Analyze Each Option**:
- **Option A: Histolytica and Coli**
- Histolytica refers to *Entamoeba histolytica*.
- Coli refers to *Entamoeba coli*.
- Both species belong to the genus *Entamoeba*. Therefore, this option is correct.

- **Option B: Gingivalis and Proteus**
- Gingivalis refers to *Porphyromonas gingivalis*.
- Proteus is a genus itself (e.g., *Proteus vulgaris*).
- Since *Porphyromonas gingivalis* and *Proteus* do not belong to the same genus, this option is incorrect.

- **Option C: Proteus and Coli**
- Proteus is a genus (e.g., *Proteus vulgaris*).
- Coli refers to *Entamoeba coli*.
- Since these belong to different genera, this option is also incorrect.

- **Option D: Vivex and Coli**
- Vivex refers to *Plasmodium vivax*.
- Coli refers to *Entamoeba coli*.
- Both belong to different genera, so this option is incorrect as well.

3. **Conclusion**: The only pair of species that belong to the same genus is Histolytica and Coli, which both belong to the genus *Entamoeba*.

### Final Answer:
The correct answer is **Option A: Histolytica and Coli**.

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