The first experiments on photosynthesis in flashing light were carried out by

Which of the following isotopes are used to study the process of photosynthesis?

The first important biological investigation which led to the conclusion that plants make their substance from water and not from soil was carried out by

Name two important researches of Priestley.

The fact that oxygen released during photosynthesis comes from water was proved by $O^{18}$ isotope experiments conducted by:

When a rat was placed into a closed container,it got suffocated and died,but when a plant was also introduced into it,the rat survived. Who performed this experiment?