Question
Define the term transpiration. Design an experiment to demonstrate this process.
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Answer
Loss of water vapour through the stomatal openings of the leaves of a plant is termed as transpiration.
- Following experiment can be performed to demonstrate transpiration in a plant:
- Place a healthy growing plant on a horizontal and plane slab in the sun.
- Place a glass bell jar over the potted plant and seal its end to the slab by applying vaseline at its edges.
- Allow the set-up to remain in the sun for some time.
- Observe the presence of water droplets on the inner surface of the glass bell jar.
- This collection of water droplets is indicative of transpiration.
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