Question

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Answer 1

Explanation:

(¡¡) 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.

(¡¡¡) 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 that causes a rise is 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.

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