Advertisements
Advertisements
Question
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
Advertisements
Solution
Take the small potted rose plant and cover it with a transparent polythene bag. Tie its mouth around the base of the stem. Leave the plant in sunlight for an hour or two.
Drops of water will soon appear on the inner side of the bag due to the saturation of water vapour given out by the leaves. A similar empty polythene bag with its mouth tied and kept in sunlight will show no drops of water. This is the control to show that plants transpire water in the form of water. If tested with dry cobalt chloride paper, the drops will be confirmed as water only.
RELATED QUESTIONS
How does temperature, light intensity and wind affect transpiration?
Mention the two ways in which transpiration helps the plants.
Transpiration helps in creating ______ force and in eliminating excess ______.
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Name the process being studies. Define the process.
Choose the correct answer:
Who had said that "transpiration is a necessary evil"?
Give Reasons for the following:
Land plants die if their roots remain waterlogged.
What are lenticels? Where are they found?
Complete the following sentence with appropriate word:
Plants become cool as a result of __________.
Write the functional activity of the following structure:
Guard cells
