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Question

Action spectrum of photosynthesis was first studied by


Your Answer
A
Blackman
Your Answer
B
Van mayer
Correct Answer
C
Engelmann
Your Answer
D
Mayerhoff

Solution

The correct option is C Engelmann
An action spectrum is the rate of a physiological activity plotted against wavelength of light.
Action spectrum of photosynthesis was first studied by Engelmann, by splitting light into its components using a prism and illuminating Cladophora placed in a suspension of aerobic bacteria.
Blackman proposed the the law of limiting factors in 1905.

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