The most vital process for the existence of life on Earth is

Who proposed the theory of photosynthesis in guard cells?

During photosynthesis,which of the following processes occurs?

In which of the following cell organelles do both photo-chemical and thermo-chemical reactions occur?

Assertion : Cyclic pathway of photosynthesis first appeared in some eubacterial species.
Reason : Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.

Which of the following has been used in photosynthetic researches?