Siti placed a plant in a beaker of red-coloured water. After two hours, she noticed that the leaves had turned red. Which part of the plant transport system was responsible for this observation?
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Worked Solution
Step 1: The red water is taken up from the roots.
Step 2: Water-carrying tubes (xylem) transport water and dissolved minerals from roots to leaves.
Step 3: The red colour in the leaves confirms the movement of water through these tubes.
Correct answer: Water-carrying tubes
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