Questions for Lecture 7:  Environmental Effects: Physiological 
        and Ecological Implications

•  By the end of your preparation on this topic, you should be able to:

    © 1. Describe the Photosynthetic Active Radiation, called PAR, for short.
 
    © 2. Summarize the photosynthetic reactions beginning with light absorption (in femtoseconds, 
              10-15s) to the time (minutes) sugars are made.

    © 3. Discuss the strategies a plant uses to adjust to changes in light.

    © 4. Discuss the dependence of photosynthesis on light intensity for plants that are adapted to 
               sun or shade conditions, or grown at different light intensities.

    © 5. Define the following concepts and terms:  quantum yield of photosynthesis; dark 
               respiration; light compensation point; light saturation of photosynthesis; ³light-dependent² 
               and ³light-independent² reactions.
 

• Outline of presentation :
            For outline of presentation and for the legends of figures, see  the Handbook for the course "Biology 121 Notes, Spring, 1998, University of Illinois, Plant Biology: Ecology and Organismic Plant Biology" by Govindjee, Stipes  Publishing, Champaign,IL.
 
    © Slides used in the class are to be found elsewhere on these Web pages.