MDCAT Biology MCQ #260

A researcher plots a graph showing the relative effectiveness of different wavelengths of light in driving the process of photosynthesis. What is this graph called?

MDCAT Biology MCQ #260

  1. Question 1

    Q1. A researcher plots a graph showing the relative effectiveness of different wavelengths of light in driving the process of photosynthesis. What is this graph called?

    • A) Absorption spectrum
    • B) Action spectrum
    • C) Electromagnetic spectrum
    • D) Emission spectrum

    Answer: Action spectrum

    Explanation: The action spectrum indicates the actual effectiveness of different wavelengths, whereas the absorption spectrum merely shows which wavelengths are taken up.