Question

Experimental setup with potassium hydroxide and without potassium Hydroxide

Answer 1

Potassium hydroxide is used for showing the use of CO2 by the plants in photosynthesis.

So, two healthy plants are taken and covered with two separate bell jars; one with some Potassium hydroxide in a glass plate and the other without the Potassium hydroxide.

Potassium hydroxide absorbs the Carbon dioxide released due to the respiration of the plant; thus that plant does not get any carbon dioxide that is essential for photosynthesis, resulting in less starch in the leaves.

On the contrary, starch will be more in the leaves of the plant without Potassium hydroxide.

Answer 2

Potassium hydroxide is used for showing the use of CO2 by the plants in photosynthesis.

Carbon Dioxide or CO2 is one of the factors and with this experiment you're going to prove its necessity for photosynthesis. Potassium Hydroxide is an inorganic solid compound which absorbs Carbon Dioxide gas. ... This proves the Carbon Dioxide is one of the factors of photosynthesis again.