1 / 19

Chapter 8 Section 4

Chapter 8 Section 4. Angiosperms. Characteristics of Angiosperms. Flowering plants Produce flowers Produce fruits (seeds are enclosed by fruits) Live almost everywhere on Earth. The Structure of Flowers. All have the same function, reproduction

xuxa
Download Presentation

Chapter 8 Section 4

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 8 Section 4 Angiosperms

  2. Characteristics of Angiosperms • Flowering plants • Produce flowers • Produce fruits (seeds are enclosed by fruits) • Live almost everywhere on Earth

  3. The Structure of Flowers • All have the same function, reproduction • Flower: reproductive structure of an angiosperm • Some flowers lack “parts”

  4. Sepals • Sepals • A leaf-like structure that encloses the bud of a flower • Often green in color, protect developing flower

  5. Petals • Colorful, leaf-like structure of some flowers • Size, shape, color, and number of petals vary from flower to flower

  6. Stamens • Male reproductive parts • Filament • Thin stalk of the stamen • Anther • Produces pollen, top of filament

  7. Pistils • Female reproductive parts • Center of most flowers

  8. Parts of the Pistil • Stigma • Sticky tip of pistil • Style • Slender tube, connects stigma to hollow structure (ovary) at base of flower • Ovary • Protects seeds as they develop, contain one or more ovules

  9. Pollinators • Color, shape, and scents of flowers attract insects and other animals • These organisms ensure that pollination occurs

  10. Reproduction of Angiosperms • Pollen (sperm cell) falls on flower’s stigma • Sperm cell and egg cell join together in ovule • Zygote develops into the embryo part of the seed

  11. Pollination • Occurs when grain of pollen lands on stigma • Wind • Animals

  12. Fertilization • Pollen falls on stigma, fertilization can occur • Sperm cell and egg cell join together in the ovule within the ovary • Zygote begins develops into seed’s embryo

  13. Fruit Development and Seed Dispersal • After fertilization, seed develops into a fruit • Fruit: a ripened ovary and other structures that enclose one or more seeds • Apples, cherries, tomatoes, squash

  14. Two Types of Angiosperms • Monocots • Angiosperms that have only one seed leaf, or cotyledon • Dicot • Angiosperms that have two seed leaves, or cotyledons

  15. MonocotEx. Corn, Wheat, Rice, Lilies, Tulips

  16. DicotEx. Roses, Violets, oak and Maple trees, dandelions, beans, apples

  17. Seed Plants in Everyday Life • Gymnosperms--- • Paper and lumber to build homes • Turpentine (rayon fibers in clothing) • Rosin (baseball players, gymnasts, musicians) • Angiosperms--- • Food, clothing, medicine for other organisms

More Related