Question

a student set up the Apparatus to show seo2 is released during the respiration after about 1 hour he observed no change in the water level in the delivery to write two possible reason for the failure of the experiment​

Answer 1

Answer:

The reasons for no change in delivary tube can be, thete was insufficient oxygen level in the laboratory.

And the reasons for the failure of experiment was, the student not follow the correct procedure or steps to conduct the experiment.

Explanation:

Carbon dioxide is released during respiration by plants.This can be proved by an experiment by taking germinating seeds in a plant in a flask. KOH solution is kept inside the flask with the help of a thread.In another beaker coloured water is kept.The rise in the level of the water is observed.

Answer 2

1. The conical flask is not airtight hence CO2 is leaking from it.

2. As CO2 gas is light and rises up, if the short end of the tube is lowered too low that it comes in contact with the seeds lying under, CO2 will not pass through the tube.

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