This is not a moneran

Options

A. Spirulina
B. Nostoc
C. Oscillatoria
D. Euglena.

Answer

**Step-by-Step Solution:**

1. **Understanding Monera**: Begin by defining what Monera is. Monera is a kingdom that includes prokaryotic organisms, which are unicellular and lack a true nucleus. The genetic material in these organisms is not enclosed within a nuclear envelope.

2. **Identifying the Organisms**: The question lists several organisms: Spirulina, Nostoc, Oscillatoria, and Euglena. We need to determine which of these is not a member of the Monera kingdom.

3. **Classifying the Organisms**:
- **Spirulina**: This is a type of cyanobacteria, which are photosynthetic bacteria and belong to the Monera kingdom.
- **Nostoc**: This is also a cyanobacterium and is classified under Monera.
- **Oscillatoria**: Another type of cyanobacteria, which is also part of the Monera kingdom.
- **Euglena**: This organism is a eukaryote, which means it has a true nucleus and belongs to the kingdom Protista.

4. **Conclusion**: Since Spirulina, Nostoc, and Oscillatoria are all prokaryotic organisms belonging to the kingdom Monera, while Euglena is a eukaryotic organism belonging to the kingdom Protista, the organism that is not a moneran is **Euglena**.

5. **Final Answer**: The correct answer is **Euglena**.

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