to prove that water is given off by the leaves during transpiration. aim,apparatus,procedure,observation,inference,precautions
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AIM: to prove that water is given off by the leaves during transpiration
APPARATUS :
Bell jar
Well watered potted plant
Rubber sheet
Glass plate
PROCEDURE:
Take the well watered potted plant and cover it with the rubber sheet. The aerial parts of the plant should be left uncovered.
Put the plant on the glass plate and cover with the bell jar.
Prepare a same setup but without a plant in the second bell jar.
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.
INFERENCE: Transpiration is the evaporation of water from the surface of leaves through stomata. The phenomenon of transpiration can be explained by Bell jar experiment.
APPARATUS :
Bell jar
Well watered potted plant
Rubber sheet
Glass plate
PROCEDURE:
Take the well watered potted plant and cover it with the rubber sheet. The aerial parts of the plant should be left uncovered.
Put the plant on the glass plate and cover with the bell jar.
Prepare a same setup but without a plant in the second bell jar.
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.
INFERENCE: Transpiration is the evaporation of water from the surface of leaves through stomata. The phenomenon of transpiration can be explained by Bell jar experiment.
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