The Wonder of Flowering Plants

1. The Wonder of Flowering Plants • The Flower is the reproductive part of the plant.

2. Male Reproductive Part of the Plant • Stamens : Anthers – Produce Pollen Pollen – sperm nuclei Filament holds up the Anther

3. Female reproductive structure of plant Pistil – contains stigma, style and ovary Stigma – sticky substance to catch pollen Style – supports stigma Ovary – contains ovule when fertilized will develop into a seed

4. Self Pollination of flowers • When a pollen transfers to the stigma of a flower on the same plant

5. Cross Pollination • Pollen moves from one plant to another of the same species.

6. Cross pollination • Wind, water and other animals are a necessity for pollination to occur in flowering plants

7. Fertilization • One sperm nucleus unites with the fused egg nucleus in an ovule, the egg begins to develop into a seed.

8. Pollen Grains • Contain three nuclei – two sperm and one tube nucleus • Tube nucleus begins forming tube that grows down to the ovary once the pollen lands on the stigma. • The ovule which contains the egg, one sperm nucleus unites with the egg and developesinto a seed.