Question

10. Assuming that higher carbon dioxide levels cause average temperature to increase, which graph best

represents the relationship between carbon dioxide level and crop yields, according to Scientist 1?

Answer 1

Graph B

Explanation: As carbon dioxide increases, crop yield also increases. However after a certain point, the crop yield starts to decrease. This is because of other limiting factors such as temperature.

Temperature would cause the proteins involved in the light dependent photosynthesis to denature disrupting the electron transport chain meaning less ATP and NADPH formed.

This also means there's less available ATP and NADPH to be used in the light independent reaction. Overall, all of this decreases rate of photosynthesis.