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Published byRoberta Tyler Modified over 8 years ago
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Sun, soil and air Starter: Write a word and chemical equation for photosynthesis
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Learning Objectives Describe how water and carbon dioxide get to leaves Explain how plant organs and cells are adapted to their functions Explain why water is needed by plants
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How are plants adapted? How can leaves get more sunlight How can roots get more water?
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Roots Allow water into the plant They have special extensions called root hair cells to reach even further
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And the water travels through the Xylem cells: strong, wide dead cells Using this information answer the questions on page 34
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Leaves Waxy cuticle: on top to stop water evaporating Palisade layer: Closely packed cells to catch as much sunlight as possible Mesophyll layer: Air spaces to let CO2 get in Guard Cell: found around holes in the leaf where water can get in an out Complete these labels in your booklet
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Correct labels, now complete the rest of the page in your booklet
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Measuring Transpiration
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Transpiration Idea: The bag stops water getting into the bag from the outside Water evaporates through the leaves No water enters the mud because of the bag So the weight decreases
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Learning Objectives Describe how water and carbon dioxide get to leaves Explain how plant organs and cells are adapted to their functions Explain why water is needed by plants
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Plenary
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