Question

Cover a potted plant with a cellphone bag .Tie its mouth with a small thread . Observe the bag after some time . Note down your observation with reasons .Find out why leaves are modified into spines in cactus

Answer 1

Answer:

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Explanation:

We know that all plants, trees, etc. respire. In the same way this is an experiment that shows the repiration of the plant. When you cover the plant with the a polythene bag the respiration does not contact with the atmosphere outside. It starts the condensation process right there and after a while we notice that  there are water droplets on the inside of the polythene bag. On the other hand if you use any other bag such as jute  air passes through it easily and hence no droplet formation is seen.

Answer 2

Answer

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