Which one belongs to monera?

Options

A. Amoeba
B. Escherichia
C. Gelidium
D. Spirogyra

Explanation

To determine which organism belongs to the kingdom Monera, we will analyze the given options one by one based on their characteristics.

### Step-by-Step Solution:

1. **Understand the Kingdom Monera**:
- Monera is a kingdom that includes all unicellular prokaryotic organisms. Prokaryotic organisms are those that do not have a defined nucleus or membrane-bound organelles.

2. **Analyze the Options**:
- **Option A: Amoeba**
- Amoeba is a unicellular organism, but it is eukaryotic, meaning it has a defined nucleus. Therefore, it does not belong to Monera.
- **Option B: Escherichia**
- Escherichia (specifically Escherichia coli) is a unicellular organism that is prokaryotic. It is a type of bacteria and fits the criteria for the Monera kingdom. Thus, this option is a candidate.
- **Option C: Galidium**
- Galidium is a type of algae, which are eukaryotic organisms. Algae belong to the plant kingdom, so this option does not belong to Monera.
- **Option D: Spirogyra**
- Spirogyra is also an algae and is eukaryotic. Like Galidium, it belongs to the plant kingdom and not to Monera.

3. **Conclusion**:
- After analyzing all the options, the only organism that belongs to the kingdom Monera is **Escherichia**.

### Final Answer:
**Escherichia** belongs to the kingdom Monera.

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