Bacteria and other Monera do not possess

Options

A. Ribosomes
B. Mitochondria
C. Plasma membrane
D. Nucleoid.

Answer

**Step-by-Step Solution:**

1. **Identify the Organisms**: Understand that bacteria and other Monera are classified as prokaryotes. This means they lack a defined nucleus and membrane-bound organelles.

2. **Understand Prokaryotic Structure**: Prokaryotic cells do not have a nuclear membrane. Instead, they contain a nucleoid, which is a region where the genetic material is located, but it is not surrounded by a membrane.

3. **Analyze the Options**:
- **Option 1: Ribosome** - Ribosomes are present in prokaryotic cells and are essential for protein synthesis.
- **Option 2: Mitochondria** - Mitochondria are double-membrane organelles responsible for energy production and are absent in prokaryotic cells.
- **Option 3: Plasma Membrane** - The plasma membrane is present in all cells, including prokaryotes, as it regulates the entry and exit of substances.
- **Option 4: Nucleoid** - The nucleoid is present in prokaryotic cells as it contains the genetic material.

4. **Conclusion**: Since mitochondria are a double-membrane organelle and are not found in prokaryotic cells, the correct answer to the question "Bacteria and other Monera do not possess" is **Option 2: Mitochondria**.

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