How many molecules of water should be photolysed to form one $NADPH_2$ molecule?

Photolysis of water takes place in

Give the necessary elements of chemiosmosis.

Read the following four statements,$(i), (ii), (iii)$ and $(iv)$ and select the right option having both correct statements.
Statements:
$(i)$ $Z$ scheme of light reaction takes place in the presence of $PSI$ only.
$(ii)$ Only $PSI$ is functional in cyclic photophosphorylation.
$(iii)$ Cyclic photophosphorylation results in the synthesis of $ATP$ and $NADPH_2$.
$(iv)$ Stroma lamellae lack $PSII$ as well as $NADP$ reductase.

The entire process of photosynthesis consists of a number of reactions. Where in the cell do each of these take place? Synthesis of $ATP$ and $NADPH$ occurs in/at:

Fluorescent chlorophyll '$a$' occurs in