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

Provide the full names for the following abbreviations:
$(1)$ $NADP$
$(2)$ $ATP$

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.

Statement-$I$: When $PS-II$ is functional,the electron is circulated within the photosystem and photophosphorylation occurs due to the cyclic flow of electrons.
Statement-$II$: The stroma lamellae membranes lack $PS-I$ as well as $NADP$ reductase enzyme.

During photosynthesis,which of the following processes occurs?

$I.$ In $C_{3}$-plants,the Calvin pathway takes place in mesophyll cells.
$II.$ In $C_{4}$-plants,the Calvin pathway takes place in the mesophyll cells.
Which of the following statements is true?