Why do stomata close during water shortage?

How much hydrogen protons are released by twelve water molecules?

What is the full form of PGA?

How many light-harvesting systems are there in light reaction?

Which of these was used by Melvin Calvin for photosynthesis studies?

Why is the productivity of C4 plants better than that of C3 plants?

What were the isotopes used, to research about photosynthesis?

Which among the following are raw materials required for the light reaction?