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

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

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

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

8. Protects seeds as they develop, contain one or more ovules
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

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

11. 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

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

13. 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

14. 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

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

17. Monocot Ex. Corn, Wheat, Rice, Lilies, Tulips
PLANT PART
MONOCOT
PICTURE
SEED
One cotyledon
LEAF
Parallel veins
STEM
Bundles of vascular tissue scattered throughout the stem
FLOWER
Three petals, or a multiple of three petals

18. Dicot Ex. Roses, Violets, oak and Maple trees, dandelions, beans, apples
PLANT PART
DICOT
PICTURE
SEED
Two cotyledons
LEAF
Branching Veins
STEM
Bundles of vascular tissue arranged in a ring
FLOWER
Four or five petals, or multiples of these numbers

19. 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