Which one is a prokaryotic?

Options

A. Oscillatoria// bacteria
B. Chlamydomonas
C. Volvox
D. Chlorella

Answer

To determine which organism is prokaryotic from the given options, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Prokaryotic Characteristics**:
- Prokaryotic organisms are unicellular and do not have membrane-bound organelles.
- They lack a true nucleus; instead, they have a nucleoid region where the genetic material is located.

2. **Examine the Options**:
- The options provided are:
- A) Oscillatoria or Bacteria
- B) Chlamydomonas
- C) Volvox
- D) Chlorella

3. **Identify Prokaryotic Organisms**:
- Among the options, we need to identify which one fits the characteristics of prokaryotes.
- **Oscillatoria** is a type of cyanobacteria, which is a prokaryotic organism.
- **Bacteria** are also prokaryotic organisms.

4. **Review the Other Options**:
- **Chlamydomonas**, **Volvox**, and **Chlorella** are all types of algae and are eukaryotic organisms. They have membrane-bound organelles and a true nucleus.

5. **Conclusion**:
- Based on the characteristics and the examination of the options, the correct answer is **A) Oscillatoria or Bacteria**, as they are prokaryotic organisms.

### Final Answer:
The prokaryotic organism from the options provided is **A) Oscillatoria or Bacteria**.

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