Question

during respiration what is used and what is evolved​

Answer 1

oxygen is used and carbon dioxide is evolved

Answer 2

In an experiment of respiration we can clearly observe the rise in the level of water indicates that CO2 is produced by germinating seeds during respiration.

Actually, the germinating seeds respire and produce CO2, which is absorbed by KOH solution. This creates a vacuum in the conical flask. The air present in the bent glass tube moves into the conical flask.

This pulls the water in the bent tube further up.

hope this may help you and be the brainliest