Why do we conduct Mohl's half leaf experiment in our school lab ?

Why do we use KOH solution in Mohl's half-leaf experiment ?

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. Prior to the experiment, the potted plant was kept in a dark room for a week. Why?

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. KOH pellets were kept in the glass jar. Why ?

You might have conducted and experiment in your school laboratory to prove that CO_2 is essential for Photosynthesis. Raju, who is in 9th class, wanted to perform the same experiment. He had some doubts regarding this experiment. Clarify them. What will be the result, if the same experiment is conducted in dark ?

Mohl's half leaf experiment demonstrates the importance of

Why do we conduct bell jar experiment with sprouted seeds and thermometer ?

Why do we conduct bell jar experiment with sprouted seeds and lime water beaker ?

Why did we study two leaves in the half leaf experiment?

Why do we produce more rice?

Why do we get rains?