Experiment to prove that Heat is evolved during Respiration

Experiment to  prove that Heat is evolved during Respiration:

Requirements:. One Thermo flask, some germinating Gram seeds and athermometer.

Procedure: Some germinating gram seeds are taken in the Thermo flask andclosed its mouth tightly with a cork. A thermometer is introduced through the cork so that its bulb rests among the gram seeds. Note the mercury reading of the thermometer.

Observation: After some time an increase in the reading of mercury in thethermometer will be observed.