Question

25 0 ETR - ETR Light Curve - Fuschia Irradiance ETR 0 107 10.1 256 16.2 445 20.6 691 22.3 961 22.9 1350 22.3 1764 21.7 2352 21.6 yield 0.77 0.648 0.489 0.351 0.223 0.164 0.114 0.085 0.056 Photochemical Yield - yield O 2500 500 1000 1500 2000 Irradiance (umol photons/m2/s) Above is one light curve we measured, showing ETR and photochemical yield. Type in your answers to the following questions below (in yellow boxes) 1. At approximately what irradiance did photosynthesis saturate? Answer: 2. What was the maximum ETR? Answer: 3. Why does the photochemical yield decline as irradiance increases? Answer:

Answer 1

The objective is to answering the following question, Ang Given that, 1000 el mol photony Mels. (2) 22.5 (3) * photo chemical reaction are those reaction which occur in presence of radiation of light. gel So when irradiance increases then photo chemical reaction take place at faster rate then yield also increase