Observe the clip showing stomata. Explain how the guard cells and stomata control water loss and gas exchange. Listen to the rap about photosynthesis and leaf structure. 4.2.3.1 Plant transport Describe the organs that 1 Demonstrate capillary action Evaluate the use of a Demonstrate long systems. make up the plant transport in a long capillary tube and model to show water piece of capillary 4.2.3.2 system. coloured dye. transport in a plant tubing supported in The roots, stem and stem. clamp, beaker of leaves form a plant Describe the role of xylem, Demonstrate transport of coloured water. transport system. phloem and root hair cells coloured dye in celery or a Prepare sections of and explain how they are plant stem then allow students celery or plant stem and stalks: celery of Root hair absorb adapted for their functions. to take sections and observe observe under a plant stalk in beaker water by osmosis and the dye in the xylem vessels microscope. of coloured water, mineral ions by Define the terms under the microscope. scalpels, tiles, slides diffusion and active and Observe prepared slides ‘transpiration’ and coverslips, transport. (See next Observe and draw xylem, or bioviewers of xylem ‘translocation’. microscopes. lesson). phloem and root hair cells. and phloem cells; draw Estimate the size of the cells. them and estimate their Prepared slides: of Xylem tissue Describe how they are size. xylem, phloem and transports water and adapted for their functions. root hair cells, dissolved ions. The microscopes, Label a diagram of a plant to flow of water from the bioviewers. show that water enters via the roots to leaves is roots and travels in the xylem called the transpiration to the leaves; carbon dioxide stream.
Observe the clip showing stomata. Explain how the guard cells and stomata control water loss and gas exchange. Listen to the rap about photosynthesis and leaf structure. 4.2.3.1 4.2.3.2 Plant transport systems. The roots, stem and leaves form a plant transport system. Root hair absorb water by osmosis and mineral ions by diffusion and active transport. (See next lesson). Xylem tissue transports water and dissolved ions. The flow of water from the roots to leaves is called the transpiration stream. Describe the organs that make up the plant transport system. Describe the role of xylem, phloem and root hair cells and explain how they are adapted for their functions. Define the terms ‘transpiration’ and ‘translocation’. 1 Demonstrate capillary action in a long capillary tube and coloured dye. Demonstrate transport of coloured dye in celery or a plant stem then allow students to take sections and observe the dye in the xylem vessels under the microscope. Observe and draw xylem, phloem and root hair cells. Estimate the size of the cells. Describe how they are adapted for their functions. Label a diagram of a plant to show that water enters via the roots and travels in the xylem to the leaves; carbon dioxide Evaluate the use of a model to show water transport in a plant stem. Prepare sections of celery or plant stem and observe under a microscope. Observe prepared slides or bioviewers of xylem and phloem cells; draw them and estimate their size. Demonstrate long piece of capillary tubing supported in clamp, beaker of coloured water. stalks: celery of plant stalk in beaker of coloured water, scalpels, tiles, slides and coverslips, microscopes. Prepared slides: of xylem, phloem and root hair cells, microscopes, bioviewers.