1. Notes: Leaf Structure Cuticle Upper Epidermis Palisade Mesophyll
Vascular Bundle (Xylem & Phloem)
Spongy Mesophyll
Lower Epidermis
Guard Cell
Stomata

2. Cuticle: waxy covering over epidermis.
Epidermis: outermost layer of cells on the leaf (like our skin).
Stoma: openings in the cuticle of the leaf for gas exchange.
Guard cells: cells that open and close the stoma.

3. Mesophyll: Tissue that makes up the majority of the leaf
Palisade mesophyll- closely stacked cells- site of most photosynthesis
Spongy mesophyll- spread out cells that allow for air to flow in/out. Allows for gas exchange (air coming in/out of stomata).

4. Vascular Bundle: xylem and phloem (vessels that transport food, water and nutrients up/down the plant).
Petiole: Attaches leaf to stem of plant.