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Analysis

1. Observe the light graph from Trial I. How did your impression of a 24-hour day/night cycle compare to your graph?
   
   
2. Observe the bagged air relative humidity and light graphs from Trial II for both the paper leaf and the living leaf. How were the two graphs similar?
   
   
3. Observe the bagged leaf graphs in Trial II for both relative humidity and light. Which graph showed a greater amount of humidity? Can you explain the difference in relative humidity?
   
   
4. How does the amount of light relate to the thermal energy within the bag?
   
   
5. Transpiration is really the evaporation of water from a leaf from the stomata. Draw a picture of the process of evaporation of water from your leaf. Refer to Technical Hints to use the drawing tool. Label any important parts of your drawing.
   
   
6. How does transpiration of a plant leaf compare to respiration of a human?