The roots, stem and Describe the role of xylem, Demonstrate transport of transport in a plant clamp, beaker of leaves form a plant phloem and root hair cells coloured dye in celery or a stem. coloured water. transport system. and explain how they are stem then allow students to Prepare sections of stalks: celery of adapted for their functions. take sections and observe the Root hair cells absorb celery or plant stem and plant stalk in beaker dye in the xylem vessels under water by osmosis and Define the terms observe under a of coloured water, the microscope. mineral ions by and microscope. scalpels, tiles, slides ‘transpiration’ diffusion and active Observe and draw xylem, and coverslips, ‘translocation’. Observe prepared slides transport. (See next phloem and root hair cells. microscopes. or bioviewers of and lesson). Estimate the size of the cells. phloem cells; draw them Prepared slides: of Describe how they are Xylem tissue and estimate their size. xylem, phloem and adapted for their functions. transports water and root hair cells, Label a diagram of a plant to dissolved ions. The microscopes, show that water enters via the flow of water from the bioviewers. roots and travels in the xylem roots to leaves is to the leaves; carbon dioxide called the transpiration enters leaves via stomata; light stream. is absorbed by chlorophyll in Xylem tissue is leaves; dissolved sugars are composed of hollow transported from the leaves in tubes strengthened the phloem to other parts of with lignin. the plant. Phloem tissue transports dissolved sugars from the leaves to parts of the plant. The movement of food through
The roots, stem and leaves form a plant transport system. Root hair cells 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. Xylem tissue is composed of hollow tubes strengthened with lignin. Phloem tissue transports dissolved sugars from the leaves to parts of the plant. The movement of food through 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’. Demonstrate transport of coloured dye in celery or a 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 enters leaves via stomata; light is absorbed by chlorophyll in leaves; dissolved sugars are transported from the leaves in the phloem to other parts of the plant. transport in a plant stem. Prepare sections of celery or plant stem and observe under a microscope. Observe prepared slides or bioviewers of and phloem cells; draw them and estimate their size. 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.
AQA-8464-SOW-ORG.DOCX