Akinetes and Heterocysts are found in

Options

A. Rhizobium
B. Anabaena
C. Glomus
D. Azospirillum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the organisms that contain akinites and heterocysts.

2. **Defining Akinetes and Heterocysts**:
- Akinetes are specialized resting cells that are larger and thicker than normal vegetative cells. They serve as a survival mechanism for the organism under unfavorable conditions.
- Heterocysts are specialized cells that facilitate nitrogen fixation, particularly when nitrogen is scarce. They are crucial for the conversion of atmospheric nitrogen into a form that can be utilized by plants.

3. **Identifying the Organisms**: The options provided are:
- Rhizobium
- Anabaena
- Glomus
- Azospirillum

4. **Analyzing Each Option**:
- **Rhizobium**: This is a nitrogen-fixing bacteria but does not have akinites or heterocysts. It forms symbiotic relationships with legumes.
- **Anabaena**: This is a type of cyanobacteria (blue-green algae) that is known to contain both akinites and heterocysts. It is capable of nitrogen fixation.
- **Glomus**: This is a genus of fungi that forms mycorrhizal associations with plants and does not possess akinites or heterocysts.
- **Azospirillum**: This is a nitrogen-fixing bacteria, but like Rhizobium, it does not have akinites or heterocysts.

5. **Conclusion**: Based on the analysis, the only organism from the options that contains both akinites and heterocysts is **Anabaena**.

6. **Final Answer**: The correct answer is **Anabaena**.

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