Question:
First action spectrum of photosynthesis was described by:
First action spectrum of photosynthesis was described by:
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Engelmann = Action Spectrum (using bacteria).
Updated On: Jun 6, 2026
- Sachs
- Engelmann
- Priestley
- Van Niel
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Early experiments in photosynthesis.
Step 2: Meaning
The action spectrum relates the rate of photosynthesis to the wavelength of light.
Step 3: Analysis
T.W. Engelmann performed a classic experiment using *Cladophora* and oxygen-seeking bacteria to determine the action spectrum of photosynthesis for the first time.
Step 4: Conclusion
Engelmann described the first action spectrum.
Final Answer: (B)
Early experiments in photosynthesis.
Step 2: Meaning
The action spectrum relates the rate of photosynthesis to the wavelength of light.
Step 3: Analysis
T.W. Engelmann performed a classic experiment using *Cladophora* and oxygen-seeking bacteria to determine the action spectrum of photosynthesis for the first time.
Step 4: Conclusion
Engelmann described the first action spectrum.
Final Answer: (B)
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