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Question
Describe one experiment you would perform to demonstrate the following phenomena: The germinating seeds produce heat.
Solution
(1) Take two thermos flasks 'A' and 'B'.
(2) Take about 200 bean or pea seeds and soak them in water for more than 24 hours.
(3) Divide the seeds into two equal groups. Kill one group of seeds by boiling them and then, wash them with dilute formalin to prevent bacterial decay. Place the live germinating seeds in flask A and the killed one in flask B.
(4) Insert a thermometer in each of the flasks and plug their mouths with cotton wool. Note the initial reading in the thermometer.
(5) After a few hours, the thermometer in flask A will show a higher reading indicating that the germinating seeds produce heat. There will not be any rise in the temperature of flask B.
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