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Question
Three plants (a), (b) and (c) were placed in beakers containing coloured water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant (b), while plant (c) was exposed to strong light.
(i) In which plant, (a), (b) or (c) would the water move up the fastest?
(ii) In which plant (a), (b) or (c), would the water move up slowly?
(iii) Why was the water covered with a layer of oil?
(iv) What is being investigated by this experiment?
Solution
(i) In (c), the water would move up the fastest.
(ii) In (b), the water would move up slowly.
(iii) To prevent evaporation of water.
(iv) Absorption of water by the roots.
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