Which one of the following categories of organisms does not evolve oxygen during photosynthesis?

Photosynthesis is a $..............$ process.

$A-$ In chloroplast,the membrane system is responsible for trapping the light energy and also for the synthesis of $ATP$ and $NADPH$. This is called the light reaction.
$R-$ In the stroma,enzymatic reactions incorporate $CO_2$ into the plant,leading to the synthesis of sugar.

Select the correct statement.

Assertion: Six molecules of $CO_2$ and twelve molecules of $NADPH + H^+$ and $18\, ATP$ are used to form one hexose molecule.
Reason: Light reaction results in the formation of $ATP$ and $NADPH_2$.

$A$ representative species has a stoma of $4 \ \mu m$ width and $26 \ \mu m$ length in: