Leaf structure and function

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Leaf structure and function. Photosynthesis, Transpiration and Gas exchange

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Lesson objectives: -to know the leaf structure - to identify the parts of the leaf and their functions - to understand the transpiration and gas exchange processes

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Assessment criteria I know the parts of the leafI can identify parts of the leaf and their functions I can describe the main functions of the leaf Hardly ever   Partly   Very well     Hardly ever   Partly   Very well     Hardly ever   Partly   Very well  

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Pre-watching: terms to know •Stomata – лептесік- устьице •Palisade layer- бағаналы паренхима •Vascular bundle- өткізгіш түтікшелер •Xylem -ксилема •Phloem- флоэма •Spongy layer -кеуекті паренхима •Guard cells -жанаспалы жасушалар •Upper epidermis- жоғарғы эпидермис(қабат) •Lower epidermis- төменгі қабат •Cuticle (thin layer)- жабын ұлпа

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•https://youtu.be/co0JdqUlycg

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Descriptor: names the parts of the leaf Palisade parenchyma 3Spongy parenchyma stomata Upper epidermis Lower epidermis Cuticle 1 2 3 4 5 6

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Descriptor:identifies the parts of the leaf with their functions 1. Stomata a) Change shape to open and close stomata 2. Palisade parenchyma b) Absorbs sunlight 3. Xylem c) Transport food in the plant 4. Phloem d) Contains chloroplasts 5. Guard cells e) Reduce the distance for CO2 to diffuse into the leaf 6. Chlorophyll f) Transport water in the plant 7. Cuticle g) Allows the exchange of gases

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Guess the word!

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Descriptor: Describe it

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Descriptor: Describe the function of the leaf

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