Which of the following granules functions as storage reservoir for phosphate in bacteria ?

Options

A. Sulphur granules
B. Cyanophycean granules
C. Volutin granules
D. PHB granules

Answer

To solve the question about which granules function as a storage reservoir for phosphate in bacteria, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which granules in bacteria serve as a storage reservoir specifically for phosphate.

2. **Analyze the Options**:
- **Option 1: Sulphur Granules**: These are aggregates found in certain bacteria (like actinomycetes) and are primarily involved in sulfur storage. They do not store phosphate, so this option is incorrect.

- **Option 2: Cyanophycin Granules**: These granules are found in cyanobacteria and serve as a reserve for nitrogen and carbon, not phosphate. Thus, this option is also incorrect.

- **Option 3: Valentin Granules**: These granules are known to function as storage reservoirs for phosphate in bacteria. This option is correct.

- **Option 4: PHP Granules**: These granules are involved in storing carbon and energy compounds in prokaryotes, not specifically phosphate. Therefore, this option is incorrect.

3. **Conclusion**: After analyzing all the options, the correct answer is **Valentin Granules**, as they specifically function as storage reservoirs for phosphate in bacteria.

### Final Answer:
**Valentin Granules** are the granules that function as a storage reservoir for phosphate in bacteria.

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