State the site of the light reaction and dark reaction in photosynthesis,respectively.

The energy stored in glucose basically comes from

Which of the following statements is/are not true?
$I.$ In $CAM$ plants,stomata open during dark and remain closed during the day.
$II.$ Role of $Na^+$ in stomatal opening is now universally accepted.
$III.$ The water potential of root cells is higher than the water potential of soil.
$IV.$ Capillarity theory is the most accepted theory of water movement through plants.
$V.$ The walls of xylem vessels made up of ligno-cellulose have strong affinity for water molecules.

$A$: Light harvesting complexes $(LHC)$ on thylakoid membrane broaden the range of light absorption.
$R$: They transfer electrons to the reaction centre.

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 $NADPH_2$.

What are the two circuits for the installation of $CO_2$?