Parts of a Flower 7th Grade Science

Vascular Plant Parts Review Remember, not all vascular plants have every single part! http://www.insideoutsidenature.com/wp-content/uploads/2013/03/Parts-of-a-Plant.png

Closer Look at Flowers Remember, the job of the flower is to produce the seed Only angiosperms will produce flowers and fruit Why they are called “flowering plants” Of all the land plants on Earth, this is the most diverse group Make up around 80% of the known plants Gymnosperms produce seeds, but they are enclosed in cones http://4.bp.blogspot.com/_maYm7Rj2uaM/SY5krs7llvI/AAAAAAAAAEQ/Mw7PNl7302A/s320/Angiosperms2.jpg https://classconnection.s3.amazonaws.com/292/flashcards/2417292/jpeg/url-21361262968324.jpeg

Flowers Have Male and Female Parts Pistil (carpel): female part of the flower Stigma Style Ovary (contains ovules; they become seeds after fertilization) Stamen: male part of the flower Anther (pollen) Filament https://extension.illinois.edu/gpe/images/flower1.gif

Additional Flower Parts Petal Provides color for plant in order to attract pollinators Sepal Provides protection to developing bud (will grow into a flower) https://lh4.googleusercontent.com/-oFht0LGxNvY/UzC09t9_f8I/AAAAAAAAANM/V1FxbS8_luI/rose2.gif

Fruit and Seeds Many flowers give rise to fruit, which in turn produce seeds If an ovule is fertilized by pollen, it becomes a seed The ovary of the flower becomes the fruit, which protects the seed Many of our vegetables are fruits by definition as they have seeds http://www.tomatogrowing.co.uk/wp-content/uploads/2011/01/NewToms.jpg

Pollination Self-pollination Cross-pollination Plant has ability to fertilize its own ovules Examples-plants in harsh conditions (Arctic) and several types of weeds Cross-pollination Plant needs to have its ovules fertilized by a different plant Example-oak trees, rose bushes Pollinators-organisms that help distribute seeds/pollen Bees, butterflies, birds, and insects