Why plant kept in polythene sheet gives water droplets?

Plants kept in a polythene sheet often exhibit water droplets due to a process called transpiration. As the plant releases moisture through its leaves, this water vapor accumulates inside the enclosed environment of the polythene, where it cools and condenses into liquid droplets. The polythene effectively traps humidity and creates a mini-greenhouse effect, enhancing this condensation process. This phenomenon helps maintain humidity levels around the plant, which can be beneficial for its growth.