Question

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Answer 1

Answer:

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Explanation:

ii) To check the presence of carbon dioxide, potassium hydroxide is placed in the test tubes X  and Y. Potassium hydroxide has a special property of absorbing carbon dioxide if  produced.

iii) In the test tube X, when the process of respiration takes place, the oxygen is consumed  that is present in the test tube. Due to respiration, carbon dioxide that is produced is  absorbed by the KOH in the test tube. Due to consumption of oxygen, a space is  developed causing the colored water to rise in the tubing 1

iv) The biological process which causes the above rise is cellular respiration.

v) It is respiration. It is a catabolic process wherein energy is liberated from simple sugars to  be able to carry out life processes.