Q.

Action spectrum of photosynthesis was given by

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By Expert Faculty of Sri Chaitanya

Sachs

Arnon

Arnold

Engelmann

answer is 4.

(Detailed Solution Below)

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Detailed Solution

T.W Engelmann used a prism to split light into its spectral components and then illuminated a green alga, Cladophora, placed in a suspension of aerobic bacteria. He observed that the bacteria accumulated mainly in the region of blue and red light of the split spectrum. A first action spectrum of photosynthesis was thus described.

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