Question

why are germinating seeds taken in the experiment to show co2 is given out during respiration ? what would happen if germinating seeds are replaced by boiled seeds ?

Answer 1

Germinating seeds are used in the experiment because they are continuously respiring and liberating CO2 that is absorbed by the KOH solution used in the experiment which forms a vacuum in the conical flask as a result of which the water in the bent tube is pulled up.

If instead of germinating seeds, boiled seeds are used, they will not release any CO2 as they will no longer respire and thus the water in the bent tube will not be pulled up.

Answer 2

Germinating seeds respire resulting in the release of carbon dioxide which will then be absorbed by the potassium hydroxide.