Question

why is potassium hydroxide used in photosynthesis experiments ? tick the correct option​

Answer 1

Answer:

The part of leaf outside becomes blue while part remaining in the bottle is colorless suggesting that, photosynthesis occurs only in the outside leaf which produces starch and this starch gives blue colour with iodine. Thus, potassium hydroxide can be used to remove CO2 gas. So, the correct answer is option D.

Answer 2

Answer:

Potassium hydroxide solution is to absorb the carbon dioxide gas from the air present in the glass bottle so that no carbon dioxide is left in the air inside the glass bottle. ... From this observation, we conclude that the photosynthesis to make starch in the leaf does not take place without carbon dioxide.