Question

Carbon dioxide is released during respiration. explain with the help of an activity​

Answer 1

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Carbon dioxide released during the aerobic respiration is absorbed by potassium hydroxide and creates a vacuum and causes rise of water in the bent tube. If we put a burning candle in the setup, the candle extinguishes which proves oxygen

Experiment to prove that carbon dioxide is produced during respiration in ..

Answer 2

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Put some germinating seeds in a conical flask.

The conical flask is fitted to a delivery tube bent twice at right angles by means of cork.

Suspend a small test tube containing 20% potassium hydroxide.

Dip the free end of the bent tube in a beaker of coloured water.

Leave it for a day. Note the changes.

The germinating seeds respires aerobically by utilizing the oxygen in the flask.

Carbon dioxide released during the aerobic respiration is absorbed by potassium hydroxide and creates a vacuum and causes rise of water in the bent tube.

If we put a burning candle in the setup, the candle extinguishes which proves oxygen is utilized by germinating seed for respiration.

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