1. Flowers and Fruits

2. Flower anatomy

3. Flower anatomy Sepals Peduncle
Green leaves that protect the flower before it opens
Peduncle
stem

4. Flower anatomy Petals Calyx Colorful leaf-like structures
Attract animals and insects
Calyx
All sepals fused
together

5. Flower anatomy Male: Stamen Filament Anther Pollen
Stalk-like structure that hold up anther
Anther
Sack-like structure that holds pollen
Pollen
Contains
reproductive cells

6. Flower anatomy Female: Pistil Stigma Style Ovary Ovule
Sticky part of pistil
Receives pollen
Style
Rod that holds up
stigma
Ovary
Holds eggs
Ovule
Reproductive cell (eggs) that become seeds once fertilized

7. Types of Flowers Perfect flower Imperfect flower Complete flower
Contains male and female parts
Imperfect flower
Contains only male or only female parts
Complete flower
Contain sepals, petals, pistil, and stamen
Incomplete flower
Missing either sepals, petals, pistil, or stamen
Imperfect flowers are always incomplete
Incomplete flowers are not always imperfect

8. Pollination and fertilization
Sexual reproduction in plants
Stamen releases pollen
Pollen is carried to a stigma
Does it have to be a different plant’s stigma?
Can it be?
How does it get there?
Pollination occurs when the pollen reaches a stigma

9. Pollination and fertilization
Pollen moves down the style depositing sperm into the ovary
Fertilization occurs when that sperm reaches an ovule inside the ovary
Once fertilized eggs become seeds and the ovary will swell and become fruit

10. Types of Fruits How can fruit be different? Name some different fruits
What is the purpose of a fruit?

11. Types of Fruits
It is the fertilized ovary of a plant that grows to produce and protect seed.
Once fertilization occurs, the flower is no longer needed and dries up.
Seed are formed within fruit.
Fruit must be sufficiently mature for the seed to be viable.

12. Types of Fruits
Good fruit formation is essential for farmers and other producers
Why?
The fruit that is often the most valuable product of a plant

13. Types of Fruits Fleshy fruit Fibrous structure that surrounds the seed
Pome
Several seeds
Drupe
Single seed

14. Types of Fruits Dry fruit Formed in a pod or hull Caryopsis Samara Pod
Thin wall
Samara
Wings attached
Pod
Definite seam
Hull
No seam

15. Seeds Container of new life
Good pollination is essential to creating lots of new seeds

16. seeds What is their purpose? Human uses Reproduce plants
Protect embryo
Provide food for new plant to grow
Human uses
Food production

17. seeds Corn, soybeans, and wheat Grapes, oranges, and watermelons
We want lots of seed from these plants
Most valuable part of the plant
Grapes, oranges, and watermelons
We want few seeds from these plants
The fruit without seeds is more valuable

18. seeds Seed structure Monocots vs. Dicots External Internal
Protect and nourish internal parts
Internal
Embryo and food supply
Monocots vs. Dicots
Very similar
Significant differences

19. Dicots External Seed coat Hilum Micropyle Hold seed together
Protection
Hilum
Seed scar
Attachment to fruit
Micropyle
Tiny opening
Pollen entered
this opening

20. seeds Internal Cotyledons Radicle Hypocotyl Epicotyl Plumule
Fleshy parts that contain food
Radicle
Forms root
Hypocotyl
Connects cotyledons
to radicle
Epicotyl
Forms stem
Plumule
Above ground part
of plant

21. monocot External Seed coat Seed scar Silk scar
Protects and shapes seed
Seed scar
Attachment point
Silk scar
Point that silk was
attached to ovule

22. seeds Internal Endosperm Radicle Hypocotyl Epicotyl Cotyledon Plumule
Stored food
Radicle
Forms root
Hypocotyl
Connects radicle
to food
Epicotyl
Forms stem
Cotyledon
Absorbs food and
moves it to cotyledon
Plumule
Develops leaves and stem