Aim:
To observe that excess water is removed in the form of vapours from the leaf surface.
What you need:
Well-watered potted plant, polythene bags, thread.
What to do:
- Take a well-watered potted plant.
- Enclose a leafy branch of the plant in a polythene bag and tie its mouth.
- Take another polythene bag and tie its mouth without keeping any plant.
- Keep both polythene bags under the sun.
What do you see:
- We see some droplets in the polythene bag that ties on the plant.
- There are no droplets in another polythene bag.
What do you learn:
Plants release excess water in the body through the stomata of the leaves.
- This process of releasing water in the form of vapour by the process called transpiration.
