Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

Exercise 16

Imagine you are standing next to the leaves of a rose bush ( Fig. ). In your hands is a digital gas analyzer used to measure changes in oxygen and carbon dioxide levels at the surface of the leaf, right at the stomata. Describe what the meter might tell you about gases moving into/out of the leaf related to photosynthesis during the day. Predict what the meter would read at nighttime.
Figure Rose bush.