Question

Draw a labelled diagram of the apparatus you will use to show that heat is produced during respiration in seeds. Why are two flasks used in the experiment?

Answer 1

Two flasks are used in the experiment (one containing the germinating seeds and other containing the boiled seeds) to show that heat is produced during respiration. Respiration occurs in germinating seeds, but not in boiled seeds. The thermometer inserted in the flask containing germinating seeds shows higher temperature than the one inserted in the flask containing boiled seeds. This shows heat is produced during respiration.