LEAVES Functions A) Responsible for photosynthesis Food production

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Presentation transcript:

LEAVES Functions A) Responsible for photosynthesis Food production Carbon dioxide + water + sun → sugar + oxygen 2 main jobs in photosynthesis 1) Collect sunlight Pigment called chlorophyll absorbs light Makes leaves green

2) Gas exchange Carbon dioxide enters Oxygen leaves B) Water loss Transpiration

Structure Made of many layers Epidermis Top and bottom layers Secretes a waxy substance called the cuticle Protects the leaf

Vein Contains xylem and phloem Transports nutrients to site of chlorophyll Mesophyll Contains majority of chlorophyll Food production Stomata Found in the epidermis Pore (hole) formed by 2 guard cells Gas exchange Water loss

Adaptations of leaves Broad Leaf Advantages? Disadvantages? Needle

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