Experiment to show the utilisation of oxygen in respiration
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Experiment to prove that oxygen is used up in respiration
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an apparatus is arranged a as shown in figure flask a contains germinating bean seeds and flask B has dead seeds together with some antiseptic to avoid bacterial decay. wet cotton Provides water to both samples . a test tube containing soda lime is is suspended in in each flask for absorbing any carbon dioxide released by the seeds. after few days the delivery tube connected with flask a a will show a greater rise in water level. when a a burning paper is introduced into each flask after removing the corks, the flame if immediately put off in flask a, but it continues for a short while in flask b. this proves that oxygen was absent in flask a showing thereby that it was used up by the germinating seeds and the volume of oxygen so used up was indicated by the rise of the water level in the delivery tube.
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