Question

Enclose a leafy branch of a plant by a polythene cover and keep it in the sunlight. Keep another empty blown polythene cover outside at the same place.

Answer 1

in case 1 you may observed tiny tropplets of water is formed which shows us transpiration takes place in the leaf containing plant

The polythene willbe cool

Whereas in 2nd case no observations are noted exept increase in temperature of the polythene cover