explain how carbon dioxide evolved in respiration
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The germinating seeds respire aerobically and use up the oxygen present in the flask. - The carbon dioxide that is released during aerobic respiration is absorbed by the potassium hydroxide solution and this creates a vacuum that causes a rise of water inside the bent tube.
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Conclusions. The rise in level water indicates that carbon dioxide is released as a result of germinating gram seeds during the process of respiration in the conical flask. ... Hence, the water level in the tube changes.
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