The oxygen released during photosynthesis comes from..........

$PGA$ as the first $CO_2$ fixation product was discovered in photosynthesis of

When did the research on photosynthesis begin?

$PGA$ as the first carbon dioxide fixation product was discovered in photosynthesis of

If a photosynthetic plant releases $18$ $O_2$ more than usual,what must the plant have received?

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of