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State that water evaporates from the surfaces of the mesophyll cells into the air spaces and then diffuses out of the leaves through the stomata as water vapour
1 Answer Describe transpiration as the loss of water vapour from leaves
1 Answer Investigate, using a suitable stain, the pathway of water through the above-ground parts of a plant
1 Answer Outline the pathway taken by water through the root, stem and leaf as: root hair cells, root cortex cells, xylem, mesophyll cells
1 Answer Identify in diagrams and images the position of xylem and phloem as seen in sections of roots, stems and leaves of non-woody dicotyledonous plants
1 Answer State the functions of xylem and phloem: (a) xylem – transport of water and mineral ions, and support (b) phloem – transport of sucrose and amino acids
1 Answer Describe the roles of capillaries and lacteals in villi
1 Answer Describe the structure of a villus
1 Answer Explain the significance of villi and microvilli in increasing the internal surface area of the small intestine
1 Answer State that most water is absorbed from the small intestine but that some is also absorbed from the colon
1 Answer
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