The statement "The amount of $CO_2$ absorbed and $O_2$ released during photosynthesis are in equal volumes" was proved by:

Warburg studied his effect on

Match the column and select the correct option $:-$

Column-$I$	Column-$II$
$(a)$ Priestley	$(i)$ Sulphur bacteria
$(b)$ Engelmann	$(ii)$ Bell jar
$(c)$ Van Niel	$(iii)$ Aquatic plant
$(d)$ Ingenhousz	$(iv)$ Cladophora

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

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

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?