A STUDENT CONDUCTED AN EXPERIMENT TO SHOW CARBON DIOXIDE IST RELEASED DURING RESPIRATION. LIST TWO PRECAUTIONS THAT HE/SHE MUST TAKE FOR OBTAINING CORRECT OBSERVATIONS.
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1 . keep conical flask airtight
2. fix the shorter end of glass tube as it not touch the seed
3. use freshly prepare potassium hydroxide( KOH ) solution .
2. fix the shorter end of glass tube as it not touch the seed
3. use freshly prepare potassium hydroxide( KOH ) solution .
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Two precautions to be taken are:
(i) Germinating seeds (living) should be used.
(ii) The experiment set up must be air-tight.
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