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What happens in light reaction (photochemical reaction) :
A
Formation of ATP and $NADPH_2$
B
Formation of ATP
C
Formation of sugar
D
Breakdown of sugar
Detailed Solution
In the light reaction (on the thylakoid membranes), light energy is absorbed by chlorophyll, water is split (photolysis) releasing $O_2$, electrons flow through the electron transport chain, and:
ATP is formed by photophosphorylation, and $NADP^+$ is reduced to $NADPH_2$.
These are then used in the dark reaction to make sugar.
So in the light reaction, ATP and $NADPH_2$ are formed.
ATP is formed by photophosphorylation, and $NADP^+$ is reduced to $NADPH_2$.
These are then used in the dark reaction to make sugar.
So in the light reaction, ATP and $NADPH_2$ are formed.