Plants-Photosynthesis and Flowers

Leaves photosynthetic organs Leaves are photosynthetic organs for plants – they absorb sunlight to make food using chlorophyll (green pigments in chloroplast that absorb sunlight) Cuticle The Cuticle is the top waxy layer of the leaf, it helps prevent the loss of water Palisade Mesophyll The Palisade Mesophyll are the cells that do most of photosynthesis Stoma The Stoma are openings that allow gases to pass through, they are surrounded by guard cells guard cells. (stomata = plural)

Photosynthesis and Respiration Notice the products reactants products of photosynthesis are the reactants of respiration and the products reactants products of respiration are the reactants of photosynthesis sunlight 36 ATP

Male Portion of a Flower Stamen The Stamen is the male component of a flower, it is made of: Anther- creates pollen (sperm cells = Male GAMETE) t Filament-supports anther

Flower sexual reproductive attract pollinators Flowers are the sexual reproductive organs for plants. The petals are designed to attract pollinators like bees and hummingbirds.

Female Portion of a Flower Pistil The Pistil is the female component of a flower, it is made of: Stigma Stigma- sticky surface for pollen Ovary Ovary- contains ovules/eggs. Becomes a fruit to help spread seeds Style Style-links the stigma to the ovary

Pollination Pollination is when the male GAMETE (sperm) transfers to the female GAMETE (ovules/eggs). This can happen in 2 ways: 1)Wind 1)Wind carries pollen to its destination. This is a random process and requires a lot of pollen production animal targeted process 2)An animal carries the pollen to its destination. This is targeted process and does not require a lot of pollen production

Fertilization

Seed Dispersal Wind Animals