Question

To show that co2 is released during respiration after about 1 hr no rise in water level in delivery tube list 2 reason for following failure of experiment

Answer 1

Following are the$\textbf{ possible reasons}$ which may be responsible for failure of experiments are as follows :

1. There shall not be proper cover, by cork on the neck of flask. Means, Air flow will be thier and hence, no vaccum.

2. May be the seeds (or plants) are not doing their photosynthesis. Possible reasons cane be lack of sunlight.