The process of uptake of $CO_2$ and release of $O_2$ by plants is called ...

How many plants in the given list can produce $3C$ compound after carboxylation of $\text{RuBP}$? Pineapple,Maize,Rice,Mustard,Sorghum,Opuntia,Tomato,Wheat.

Photosynthesis is a $..............$ process.

What is true for photosynthesis $-$

Which of the following has been used in photosynthetic researches?

Analogy type questions:
$(1)$ $C_4$ plants : Show $CO_2$ saturation at $360 \,\mu l L^{-1}$ :: $C_3$ plants : Show $CO_2$ saturation at concentrations above ............
$(2)$ Green plants : $H_2O$ as hydrogen donor :: Green sulfur bacteria : ............