| Study the given experimental setup. |
|
| By measuring the movement of the oil drop in the apparatus, what can be investigated? |
A) Carbon dioxide released during germination
B) Heat released during germination
C) Oxygen used during germination
D) Water produced during germination
Correct Answer: C
Solution :
In the given experimental setup, germinating peas will undergo aerobic respiration, in which they use up oxygen and release carbon dioxide. Carbon dioxide released will be absorbed by sodium hydroxide. As germinating peas will consume oxygen present in test tube, a suction force is developed due to pressure difference which causes the movement of the coloured oil drop towards the test tube. Thus, this experiment will help to investigate the amount of oxygen used during germination.
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