Experiments Related to Transpiration
Experiments Related to Transpiration
Demonstration of Transpiration :
Experiment 1 :-
Experiment 2 :- Arrange three set ups A, B and C as follows :
Set up A :- Take a small well watered potted plant, preferably one with broad leaves. Enclose the pot completely within a polythene bag and tie the mouth of the bag firmly around the base of the stem. This would prevent the escape of water vapor from the pot. Now cover the entire plant under a bell jar as in (A).
Set - up B :- Arrange another similar plant and cover it with a bell jar exactly in the same manner as the first one, except that here you also keep a piece of dry cobalt chloride paper by the side of the plant inside the bell jar(B). The paper may be pinned to a wooden stick or to a strip of cork sheet.
Set - up C:- Take a third bell jar without the plant, but still containing a similar piece of cobalt chloride paper(C). Now, keep all the three bell jars together in the sun.
Observation :-
Conclusion :-
Following observations can be observed which proves the occurrence of transpiration in Plants:-
(1) Condensation of water vapor into droplets
(2) Change of color in cobalt chloride paper.
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