write an experiment to show that transpiration takes place in plants
Answers
Answer:
Transpiration is the evaporation of water from the surface of leaves through stomata. The phenomenon of transpiration can be explained by Bell jar experiment.
REQUIREMENTS:
Bell jar
Well watered potted plant
Rubber sheet
Glass plate
PROCEDURE:
1) Take the well watered potted plant and cover it with the rubber sheet.
2) The aerial parts of the plant should be left uncovered.
3) Put the plant on the glass plate and cover with the bell jar.
4) Prepare a same setup but without a plant in the second bell jar.
5) Place the apparatus in sunlight for sometime.
OBSERVATIONS:
Water drops appear inside the walls of the bell jar containing potted plant whereas no water drops appear in the bell jar without a plant. This demonstrates that water is evaporated from the surface of leaves in presence of sunlight.
Explanation:
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Answer:
to study factors affecting the rate of transpiration
Explanation:
TAKE TWO SMALL POTTED PLANTS PLANTS OF SAME TYPE HAVING EQUAL NUMBER OF LEAVES.
LEAVE ONE PLANT UNDISPUTED.
IN OTHER PLANT APPLY VASELINE ON EITHER SURFACE AT SAME PLACE IN SUNLIGHT.
OBSERVE AND COMPARE THE PLANTS AFTER 4 TO 5 HOURS AND RECORD YOUR OBSERVATIONS.
PLANT WITH VASELINE APPLIED ON ITS LEAVES APPEARED WILTING BECAUSE TRANSPIRATION WHICH IS NECESSARY FOR GASEOUS EXCHANGE AND WATER T TRANSPORT IN THE PLANT COULD NOT TAKE PLACE
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