During photosynthesis,which of the following processes occurs?

Separate the processes of light reaction and dark reaction from the following:
$I-$ Fixation of $CO_2$
$II-$ Absorption of light
$III-$ Release of $O_2$
$IV-$ Utilization of $ATP$ and $NADPH_2$
$V-$ Synthesis of $ATP$ and $NADPH_2$
$VI-$ Synthesis of glucose
Identify the correct sequence for light reaction and dark reaction respectively.

Which of the following statements is correct regarding $C_4$ plants?

Photosynthesis is a

What is the effect of high $CO_{2}$ concentration and higher values of $ATP/ADP$ ratio?

For the synthesis of one molecule of hexose,how many additional molecules of $ATP$ are required in $C_3$ and $C_4$ pathways,respectively,besides the $12$ molecules of $NADPH_2$?