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The. diagram of an apparatus given below demonstrates a paniadar process in plants. Study the same and answer the Questions that follow.(i) Name the apparatus. (ii) Which phenomenon is demonstrated, by this apparatus (iii) Explain the phenomenon mentioned in (ii) above. (iv) State two limitations of using this apparatus. (v) What is the importance of the air bubble in, the experiment ? (vi) Name the structures in a plant through which the above process takes place. |
Answer» (i) Ganong’s potometer (ii) Transpiration (iii) The process in which water is given out in the form of vapour through the aerial parts of the plant. (iv) 1. The small twig can not remain alive for a long time. 2. Introducing a single air bubble is practically very difficult. (v) The movement of the air bubble shows the amount of water transpired by the twig in a given time. (vi) 1. Cuticle 2. Stomata 3. Lenticel |
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