In which plant did Melvin Calvin experiment using radioactive isotopes to discover the first stable product of the $C_3$ cycle?

Which scientist performed the experiment where a burning candle and a mouse were placed in a closed bell jar to demonstrate the role of air in the growth of plants?

The experimental material that has largely been responsible for making rapid advances in research on photosynthesis is

What was the difference between Priestley and Ingenhousz's experiment?

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

Explain the experiment of $T$. $W$. Engelmann $(1843 - 1909)$.