Question

Why do we use KOH solution in mohls half leaf experiment

Answer 1

KOH is used in the experiment to show the importance of carbon di-oxide in the process of photosynthesis.

This experiment is very important in terms of understanding the concepts.

Two leaves are kept and the one in KOH solution does not change to blue black due to the absence of carbon di-oxide.

Answer 2

We use KOH solution in Mohl's leaf experiment to prove that $\bf CO_2$ essential for photosynthesis.

• Mohl's leaf experiment is used to prove that light, chlorophyll, water and $CO_2$ are necessary for photosynthesis.
• The KOH solution is used in the experiment to absorb the $CO_2$ inside the bottle
• Hence it prevents the leaf from getting $CO_2$ and hence the starch test comes negative indicating that carbon dioxide is required for photosynthesis.

#SPJ2