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28. Place the statements in the correct order to describe the process of water movement from the rOOtS to
the leaves. (3 marks)
1. Root pressure forces water through the cells or along cell walls into the xylem.
2. Transpiration pull combined with the forces of adhesion and cohesion, draws water up the xylem
VeSSCelS.
3. Ahigh concentration of solute in the root cellS causes Water tO ntCr the root hairs through the
PrOCeSS Of OSmOSiS.
4. Evaporation through the stomata and lenticels creates tenSiOn. いま
5. Water in the leaves is used to manufacture sugar in photosynthesiS.
6. Water moves from the xylem into the ground tissue of the leaves.
Section IV - Written Response (17 marks)
29. Describe the fluid mosaic model of the cell membrane. Include the components and their functions.
Draw a sketch of the model.(7marks)
30. a) Describe how the water needed for photosynthesis moves from its source outside the plant to where
it is needed in the leaf cells. Include specific structures and cell types.
b) Describe how the sugar produced by photosynthesis moves from the leaf to where itis needed or
stored. (6 marks)
31. Describe one practical application of our understanding of semipermeable membranes
(2 marks)
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