What is the function of $RuBisCO$?

Which of the following processes involves the conversion of light energy into chemical energy?

Read the following four statements ($a, b, c,$ and $d$) carefully and select the option that includes both correct statements.
$(A)$ The $Z$-scheme of light reaction occurs only in the presence of $PSI$.
$(B)$ Only $PSI$ is functional in cyclic photophosphorylation.
$(C)$ Cyclic photophosphorylation results in the synthesis of $ATP$ and $NADPH_2$.
$(D)$ Stroma lamellae lack both $PS-II$ and $NADP$ reductase $(FNR)$.

The detectable end product of photosynthesis is

Which of the following is $NOT$ a utility of photosynthesis?

In bacterial photosynthesis,which of the following is present?