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Seed Germination

Why we invert...

Question

Why we invert the flasks during the test for heat production during respiration?

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Solution

This is because
1)CO2 produced is a heavy gas and may escape through the cotton wool

2)Hot air rises up and inverting it will ensure that heat will not escape through cotton wool

3)It is easier to read the thermometer

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Similar questions

Q. Why we should take germinating seeds in a conical flask for the experiment carbon dioxide is given out during the process of respiration?

Q. Can you, design any other experiment set- up for testing that

C O_{2}

is produced during respiration ?

During respiration, we breathe in:

Q. For experiment showing that

C O_{2}

is evolved during the process of respiration in plants - arrange the steps sequentially.

i) Soak gram seeds in water, overnight. Keep them in conical flask.
ii) Close the conical flask with cork fitted with 'U' tube.
iii) Insert test tube with KOH solution in the conical flask.
iv) Keep the set steady for some time.

Q. In the experiment to show that

C O_{2}

is released during respiration', the small test tube of KOH solution is suspended inside the conical flask to absorb the :
(a) air of the flask
(b) moisture of the flask
(c)

O_{2}

of the flask
(d)

C O_{2}

of the flask released by the seeds

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