Final answer:
The oxidation of water in photosystem II of the light-dependent reactions generates ATP and NADPH. These energy and reducing power molecules are then used in the light-independent reactions to synthesize glyceraldehyde-3-phosphate (G3PA) from carbon dioxide (CO2). Closed stomata on a hot, dry day would decrease the availability of CO2, leading to a decrease in G3PA synthesis.
Step-by-step explanation:
The connection between the oxidation of water in photosystem II of the light-dependent reactions and the synthesis of glyceraldehyde-3-phosphate (G3PA) in the light-independent reactions is that the light-dependent reactions generate ATP and NADPH, which are used as energy and reducing power in the light-independent reactions. During the light-dependent reactions, water molecules are split and oxygen is released, while electrons and protons are used to generate ATP and NADPH. The ATP and NADPH then provide the energy and reducing power needed for the synthesis of G3PA in the light-independent reactions.
Closed stomata on a hot, dry day would lead to a decrease in the availability of carbon dioxide (CO2) in the plant, as stomata are the main entry points for CO2. This reduction in CO2 availability would limit the rate of G3PA synthesis in the light-independent reactions, as G3PA is derived from CO2. Therefore, the effect of closed stomata on the synthesis of G3PA would be a decrease in G3PA production.
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