Water a small potted plant . place the pot in a plastic bag and tie it around the base of the stem to ensure that water does not escape from the soil. place the potted plant on top of a glass or plastic sheet and covet it with a bell jar. in the absence of a bell jar or widemouthed bottle, place the setup in a clear, transparent and air-tight plastic bag. this is setup 1
setup 2. this time use a flower pot with soil but with no living plant. cover also the pot and soil with plastic. then place the entire setup om another air-tight bell jar or plastic bag.
within 24 hours, observe the droplets of water along the inner wall of the bell jar in setup 1. compare with 2
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