The first action spectrum was obtained by___________?
Correct answer: A. T.W.Englemam
- A. T.W.Englemam
- B. Malleus
- C. T.W.Inws
- D. W.Stapes
Explanation
The first action spectrum was obtained by Theodor Wilhelm Engelmann, who used algal filaments and aerobic bacteria to relate oxygen production to wavelength. Students may choose Malleus or Stapes because those names are also associated with biology, but they are bones of the middle ear, not photosynthesis researchers.
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