Q.

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:

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Violet and green light

Indigo and green light

Orange and yellow light

Blue and red light

answer is 4.

(Detailed Solution Below)

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Detailed Solution

Azotobacter bacteria were used to detect the sites of O2 evolution. Photosynthesis is maximum in blue and red light. Therefore, bacteria accumulated mainly in these two regions.

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