If a potted plant is covered with a glass jar water vapours appear on the wall of Glass jar explain why

Q- If a potted plant is covered with a glass jar, water vapors appear on the wall of glass jar. Explain why?

Answer- If a potted plant is covered with a glass jar, water vapors appear on the wall of glass jar because every plant losses water in form of vapor by the process of transpiration. That vapor lost by stomatal pore by transpiration process collects on the wall of the jar. 

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