Transport in Plants
Ascent of Sap
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1: (a) Osmosis, 2: (b) Deeper layers of root, 3: (c) Plasmodesmata, 4: (d) Root pressure, 5: (a) Surface tension, 6: (c) Calcium, 7: (c) Both a and b, 8: (a) Water and sucrose, 9: (c) Plastids and mitochondria, 10: (d) Grass