Why do stomata close during water shortage?

How many molecules of PGA are produced on carboxylation?

The first action spectrum based on photosynthesis was given by __

Which of these scientists have contributed to photosynthesis studies?

Which of these is not a 4-carbon compound?

Which among the following enzymes are present in the chloroplast?

In photosynthesis, the carbon dioxide is oxidized and water is reduced.

Who found out that oxygen evolved from water in photosynthesis?