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Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Action Spectrum
Aerobic bacteria reveal oxygen production by wavelength. Aerobic bacteria accumulate where oxygen production is greatest. In the diagram, bacterial abundance is highest in the red region (and also in blue/violet), matching the absorption/action spectrum of chlorophyll. Therefore red light produces maximum oxygen among the listed choices. Answer: C. Page 8 Part A₂ - Multiple Correct For Q₄₉-Q₆₀, any number of alternatives may be correct.
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- ✓Aerobic bacteria reveal oxygen production by wavelength
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