Which one of the following helps in absorption of phosphorus from soil by plants?

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which organism helps in the absorption of phosphorus from the soil by plants.

2. **Identifying the Options**: The options provided are:
- A) Glomus
- B) Rhizobium
- C) Frankia

3. **Analyzing Each Option**:
- **Glomus**: This is a genus of fungi that forms mycorrhizal associations with plant roots. Mycorrhizae enhance the absorption of nutrients, especially phosphorus, from the soil.
- **Rhizobium**: This is a genus of bacteria that forms symbiotic relationships with legumes, primarily aiding in nitrogen fixation, not phosphorus absorption.
- **Frankia**: This is another genus of bacteria that also forms symbiotic relationships with certain plants (like actinorhizal plants) and aids in nitrogen fixation.

4. **Conclusion**: Based on the analysis, Glomus is the organism that helps in the absorption of phosphorus from the soil by plants through its mycorrhizal association.

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

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