- Remind pupils,
eg by showing them the word and/or symbol equations, that the first product of photosynthesis is glucose and that some of this is used in plant respiration. Ask pupils about foods from plants that contain sugars and starches and, if appropriate, demonstrate,
eg using models, photographs, how the structures of sugars and starches are related.
- Present pupils with a range of familiar plant products,
eg cotton fibre, rice, potatoes, wooden spills, perfume, corn oil, textured vegetable protein (TVP), paper. Ask what substances could be found in each,
eg cellulose, fats, proteins, starches, sugars. Explain that these form a plant's biomass together with the glucose used in plant respiration.
- Ask pupils to use secondary sources to investigate an economically important plant product or products, and present information on products from biomass as a poster, helping them to identify what is needed.
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- identify photosynthesis as the source of biomass in plants
- explain that glucose made in photosynthesis is used for respiration
- describe all parts of the plant as deriving from the products of photosynthesis
- select, compare and synthesise information from different texts
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