Question
SLPaper 1A
Plants produce carbon dioxide in respiration and use carbon dioxide in photosynthesis. The graph shows the volume of carbon dioxide exchanged in a plant at different light intensities.
What is shown by the graph?
A
There is no photosynthesis between W and X.
B
There is no photosynthesis between Y and Z.
C
There is more respiration than photosynthesis between Y and Z.
D
There is more respiration than photosynthesis between W and X.