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Q. No.One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of:
| 1. | Violet and green light |
| 2. | Indigo and green light |
| 3. | Orange and yellow light |
| 4. | Blue and red light |
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Subtopic: Â Historical View: Experiments |
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