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Chapter: Biology: Practical Botany

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Experiment to prove that Heat is evolved during Respiration

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

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.

 

Conclusion: Rise of mercury indicates the rise of temperature. And thistemperature is produced by the respiration of the germinating seeds.

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