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Question
Given below is an experimental set up to study a particular process:
(i) Name the process being studied.
(ii) Explain the process named in (i) above.
(iii) Why is the pot covered with a plastic sheet?
(iv) Mention one way in which this process is beneficial to the plant.
(v) Suggest a suitable control for this experiment.
Solution
(i) Transpiration.
(ii) It is processed in which water in the form of vapours are released from the aerial parts like leaves and soft stems of the plant.
(iii) The plastic sheet will not allow the moisture of the mud of the pot to come out and affect the result.
(iv) It helps in the ascent of sap in the plant.
(v) A similar apparatus is set up without the potted plant. In its place, the same plastic bag, with its mouth tied, is kept in the bell jar. No water drops will appear in the bell jar.
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