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

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

4. 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

5. Adaptations of leaves
Broad Leaf
Advantages?
Disadvantages?
Needle