MDCAT Biology MCQ #418

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

MDCAT Biology MCQ #418

  1. Question 1

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

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

    Answer: Action spectrum

    Explanation: The absorption spectrum shows how much light is absorbed, while the action spectrum shows the actual rate of photosynthesis. They are not identical.