Advertisements
Advertisements
प्रश्न
Describe an experiment to prove that transpiration occurs more from the undersurface of dorsiventral leaves.
Advertisements
उत्तर
Two equal pieces of cobalt chloride paper are dried and placed on the upper surface and the other on the lower surface of dorsiventral leaves. They are firmly held in place by pieces of cello tapes or glass slides. After a few minutes, the cobalt chloride paper shows change in colour from blue to pink. The time taken for the cobalt chloride paper on the upper surface of the leaf to turn pink is much longer than for the under surface. Thus, it proves that the rate of transpiration is greater from the undersurface of dorsiventral leaves.
संबंधित प्रश्न
Under what conditions do plant transpire more quickly?
Comment on the following statement:
A well-watered potted plant shows wilting of leaves on a hot sunny day.
Name the following.
The tissue which conducts water absorbed by the roots to the upper parts of a herbaceous plant.
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
What is the purpose of putting oil in the test tube?
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
Would it make a difference if the experimental set-up is kept in bright sunshine?
During transpiration, there is a loss of ______
Plants lose water by the process of transpiration.
Analogy:
Photosynthesis: ______:: Transpiration: Stomata
Which one is not related to transpiration?
Why is transpiration less in the still wind?
