Bluee green algae can photosynthesis due to presence of:-

Options

A. Heterocyst
B. Akinetes
C. Chromatophore
D. Leghaemoglobin

Answer

**Step-by-Step Solution:**

1. **Understanding Blue-Green Algae**: Blue-green algae are also known as cyanobacteria. They are a group of photosynthetic bacteria that can perform photosynthesis.

2. **Identifying Key Features**: Cyanobacteria can range from single-celled organisms to filamentous forms. They are capable of photosynthesis due to specific structures that contain pigments.

3. **Analyzing the Options**:
- **Heterocyst**: These are specialized cells in some filamentous cyanobacteria that fix nitrogen but do not directly contribute to photosynthesis. Thus, this option is incorrect.
- **Akinetes**: These are thick-walled spores formed by some cyanobacteria, which help in survival but are not directly involved in photosynthesis. This option is also incorrect.
- **Chromatophore**: This is the correct option. Chromatophores are membranous structures that contain pigments necessary for photosynthesis, making them the photosynthetic sites in blue-green algae.
- **Leghemoglobin**: This protein is involved in oxygen transport in the root nodules of leguminous plants and is not a component of cyanobacteria. Therefore, this option is incorrect.

4. **Conclusion**: The correct answer is that blue-green algae can photosynthesize due to the presence of chromatophores.

**Final Answer**: Chromatophore

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