A student conducted an experiment to show that carbon dioxide is released during respiration. State two precautions that the student must take for obtaining correct observations.
Two precautions which should be taken during performing the experiment to show that carbon dioxide is produced during respiration are -
- The conical flask should be air tight so that the CO2 produced during the experiment does not escape and a partial vacuum can be created in the flask.
- Germinating seeds should be used in the experiment because germinating seeds produce CO2 which has to be tested in this experiment.
Lakhmir Biology (2020, 2021)