structure and functions of the leaf

Structure of a leaf!!

It’s important for the leaf structure to adapt in order to maximize the process of photosynthesis

What is the formula of photosynthesis?

6CO2 + 6H2O + Energy(sunlight) → C6H12O6(glucose/sugar) + 6O2

Cuticle

The waxy layer on a leaf that prevents water loss

Upper and lower epidermis

Transparent skin that lets in light and protects the leaf

Palisade parenchyma

-Contains chloroplast that preforms photosynthesis

-Makes glucose

Spongey parenchyma

-Air pockets containing CO2 and O2

-Allows the interchange of gases necessary for photosynthesis

Veins

-Contains the xylem and phloem

-Xylem: Transports H2O and minerals from roots → leaves

-Phloem: Transports glucose from leaves → roots(as sucrose)

Stoma

-Allows gases in and out

-CO2 goes in, O2 and H2O goes out = DIFFUSION!!

-Located on the bottom of the leaf

Guard cells

-Uses H2O pressure to regulate the stoma size

-Located on the bottom of the leaf

Leaf, “organ”

Large, flat surface area for increases light absorption