Select the correct option:
$(1)$ Maize / Sunflower is a $C_4$ plant.
$(2)$ Rubisco / Oxygenase is the most abundant enzyme in the world.

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.

Which of the following has been used in photosynthetic researches?

Which of the following plants can show the $CAM$ cycle?

Which of the following is true for photosynthesis?

If the photosynthetic yield in blue wavelength is $10$ units and that in red wavelength is $40$ units, what should be the yield of photosynthesis in a combination of the two wavelengths, if the effect is synergistic (in $units$)?