Respiration in seeds experiment

respiration

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  • Created by: Rianne B
  • Created on: 30-04-13 21:58

Demonstration that heat is produced by respiration

Some peas are soaked in water for 24 hours, so that they start to germinate.  A second batch of peas is boiled, to kill them.  Each set of peas is washed in a 1% bleach solution, which acts as a disinfectant, surface-sterilising them and killing any bacteria present.  The peas are then rinsed twice in distilled water to remove any traces of bleach.  Each batch of peas is placed ina n inverted vacuum flask, leaving some air in each flask.  A vacuum flask insulates its contents, so that any small temperature change inside the flask can be measured.

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