Analyze the graph showing the rate of photosynthesis activity as a function of carbon dioxide level Select as many of the choices below that accurately describe the shape of the graph as it relates to photosynthesis. click 2 A) The rate of photosynthesis increases as carbon dioxide levels increase.

B) There is a maximum value of photosynthesis that can be reached after a certain point.

C)Carbon dioxide is not needed for the Calvin cycle, so the graph levels off after a certain point.

D) Carbon dioxide is needed for the light-dependent reactions, so the graph increases rapidly in the beginning.

E) Carbon dioxide is the only reactant in photosynthesis, so when it is in excess, photosynthesis rate cannot increase further.