Question:
Phenomenon that describe the first action spectra of photosynthesis:
I. Illumination of Cladophora
II. Detection of O$_2$ release using anaerobic bacteria
III. Accumulation of aerobic bacteria in red and blue light
IV. Cladophora in suspension of anaerobic bacteria
Phenomenon that describe the first action spectra of photosynthesis:
I. Illumination of Cladophora
II. Detection of O$_2$ release using anaerobic bacteria
III. Accumulation of aerobic bacteria in red and blue light
IV. Cladophora in suspension of anaerobic bacteria
I. Illumination of Cladophora
II. Detection of O$_2$ release using anaerobic bacteria
III. Accumulation of aerobic bacteria in red and blue light
IV. Cladophora in suspension of anaerobic bacteria
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Engelmann’s experiment = {Cladophora} + aerobic bacteria = action spectrum of photosynthesis.
Updated On: Jun 2, 2025
- I, II
- II, III
- III, IV
- I, III
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The Correct Option is D
Solution and Explanation
- In Engelmann’s experiment:
- A filament of Cladophora was used (I)
- The aerobic bacteria accumulated in red and blue regions indicating maximum O$_2$ evolution (III)
- II and IV refer to anaerobic studies but are not the key highlights of the original action spectrum experiment.
- A filament of Cladophora was used (I)
- The aerobic bacteria accumulated in red and blue regions indicating maximum O$_2$ evolution (III)
- II and IV refer to anaerobic studies but are not the key highlights of the original action spectrum experiment.
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