14.
a) What procedure did you follow to observe oxygen produced during
photosynthesis in the presence of light?
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Explanation:
1 Take some germinating seeds in the bulb of respirometer .
2 insert the tube of the respirometer into a beaker containing mercury.
3 introduce a pellet of KOH in the setup it will absorb the carbon dioxide .
4 set up another experiment without any seed to act as a control.
5 Observe after 1 day.
OBSERVATION -------the level of the mercury rises up in the respirometer tube but remains in the same control .
CONCLUSION---- this is because of the oxygen inside apparatus is used up by the seeds deuring respiration. As a result air pressure inside the bulb is reduc rising the
level of mercury. IF IT IS HELPFUL PLZ MARK AS BRILLIANT ANSWER
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