Study the given experimental set-up.

By measuring the movement of the oil drop in the apparatus, what can be investigated?

Options

A. Carbon dioxide is released during germination
B. Heat is released during germination
C. Oxygen is used during germination
D. Water is produced during germination

Answer

C

Explanation

In the given experimental set-up, germinating peas will undergo aerobic respiration, in which they will use up oxygen and release carbon dioxide. Carbon dioxide released will be absorbed by sodium hydroxide present in this test tube. As germinating peas will consume oxygen present in test tube, a suction force will be developed. Due to pressure difference, the coloured oil drop will move towards the test tube. Thus, this experiment will help to investigate the amount of oxygen used during germination.