1. Angiosperms
Chapter 5
Section 3

2. What are Angiosperms Produces seeds enclosed in a fruit
“seed in a vessel”
Ovary- vessel where seed develops
Located within the flower
Produce flowers and fruits
Grow everywhere on Earth
Arctic to jungles

3. Structure of Flowers
Petals- colorful structures when flower opens- not all flowers have petals
Sepals-leaves that protect developing flower
Stamen- male reproductive parts
Pistils- female parts usually found in the center of the flower
Stigma-sticky tip
Style- slender tube connects stigma to hollow structure at center of flower where ovules are located

4. Reproduction Pollination and Fertilization
Pollen falls onto stigma
Sperm and egg join in ovule
Zygote develops into embryo part of seed
Fertilization occurs when pollen falls on stigma
Pollination
Wind
Insects
Go after the nectar deep in the flower
Brush on pollen loaded anthers
Pollinates flowers as it gathers more nectar

5. Reproduction Pollen falls on a stigma
Sperm and egg cells join together if flower’s ovule
Zygote develops into an embryo part of the seed

6. Pollination and Fertilization
Pollination occurs when a grain of pollen falls on the stigma.
Pollen can be transported by wind, birds, bats or insects
Nectar- sugar rich food located deep in flower
Animals enter flower to gather nectar
Brushes against anthers and is coated with pollen
Moves to another flower and pollen is left on sticky stigma
If pollen falls on a similar flower, pollination occurs
Zygote develops into embryo

7. Seed Dispersal As seed develop, ovary turns to fruit.
Fruit- ripened ovary and other structures that enclose one or more seeds.
Apples, cherries, tomatoes, squash
Fruit is a method of dispersing seeds

8. Types of Angiosperms Monocots Dicots One seed leaf
Grasses, wheat, lilies, tulips
Flowers have 3 petals or multiples of 3.
Long slender leaves with veins running parallel to one another
Bundles of vascular tissue scattered randomly throughout stem
Two seed leafs
Roses, violets, dandelions, oak and maple trees, beans, apples
Flowers have for or five petals or multiples
Leaves are wide with veins that branch off form one another
Bundles of vascular tissue arranged in a circle

9. Monocots and Dicots

10. Angiosperms and the Living World
Important source of food, clothing and medicine
Cotton for clothing
Flax for linen
Sap from rubber trees for rubber
Furniture from maple, cherry and oak trees
Willow trees for aspirin
Foxglove for Digitalis ( a heart medicine)
Mexican Yam for cortisone