Question

The seeds respire at the time of germination .while showing this experiment a test tube with koh is kept in the conicle flask to

Answer 1

The seeds respire at the time of germination while showing this experiment a test tube with koh is kept in the conical flask to absorb the carbon dioxide  which is generated by the seeds which are germinating .

A vaccum is created then in the conical flask.

Then water rises up in the tube  which is of equal volume.

Answer 2

The KOH solution is kept in the conical flask while showing the experiment of the seeds respiration at the time of germination because in the test-tube in the air-tight flask absorbs the evolved CO2 which is released by the germinating seeds.

Thus, it creates a partial vacuum in the conical flask therefore, equally the volume of water rises in the tube.

It indicates that seeds are respiring and carbon dioxide is evolved in the process.