The biochemical phase of photosynthesis was first discovered by .........

Select the correct option regarding the experiments on photosynthesis.

Name the scientist who demonstrated by the bell jar experiment that plants purify the air.

Who provided evidence for the production of glucose when plants grow?

During photosynthesis,the oxygen in glucose $(C_6H_{12}O_6)$ comes from which of the following?

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