Which of the following helps in absorption of phosphates from the soil by plants

Options

A. Yeast
B. Glomus
C. Nostoc
D. Rhizobium

Answer

**Step-by-Step Solution:**

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

2. **Identifying Relevant Organisms**: The options provided likely include various microorganisms. We need to identify which of these are known to assist plants in phosphate absorption.

3. **Exploring Mycorrhiza**: Mycorrhiza refers to a symbiotic association between fungi and plant roots. This relationship is crucial for nutrient absorption, particularly phosphates.

4. **Role of Fungi in Mycorrhiza**: In this symbiotic relationship, fungi (specifically those from the genus Glomus) absorb phosphates from the soil and transfer them to the plant. This enhances the plant's ability to uptake nutrients.

5. **Evaluating Other Options**:
- **Yeast**: Yeast is a single-celled organism used mainly in fermentation and does not play a role in phosphate absorption.
- **Nostoc**: Nostoc is a free-living nitrogen-fixing bacteria, which helps in nitrogen fixation but not phosphate absorption.
- **Rhizobium**: Rhizobium is a symbiotic nitrogen-fixing bacteria associated with legumes, and it also does not assist in phosphate absorption.

6. **Conclusion**: The organism that helps in the absorption of phosphates from the soil by plants is Glomus, as it forms mycorrhizal associations with plant roots.

**Final Answer**: Glomus

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