1. To be successful today…
Pick up graded work
Add to TOC and set up Notes: Plant Reproduction
HW: Flower Coloring Sheet
BYOD Color of the day is Phones are in put away in backpacks

2. Flowers allow some plants (angiosperms) to reproduce w/out water
Plant Reproduction
Flowers allow some plants (angiosperms) to reproduce w/out water

3. Most flowers have 4 basic parts.
petals
pistil/
carpel
stamen
sepals

4. Some floral structures are nonessential; they are not required for reproduction.
petals
colorful, protect reproductive structures, attract pollinators
sepals
leaf-like structures which protect the flower before blooming

5. Some floral structures are essential for reproduction to occur.
stamens
male organs, produce sperm in pollen grains
pistil/
carpel
female organ, produces egg(s)

6. Stamens are made of 2 parts.
anther
produces pollen
filament
supports anther

7. Pistils ( ) are made of 3 parts.
stigma
Receives/catches pollen
style
connects stigma to ovary
ovary
produces egg(s)

8. Identify the structures in this flower.
petal
stigma
pistil
style
anther
stamen
filament
Where is the ovary?
Where are the sepals?

9. Inside every pollen grain are two sperm cells.

10. When pollen lands on the stigma, this process is called pollination.
A pollen tube grows from the pollen grain and the sperm migrate to the egg.
The first sperm fertilizes the egg.

11. Pollinators include insects, birds, and wind.

12. Flowers & Pollinators
Wind pollination - not very efficient; produce vast amounts of pollen;
ex. Oak trees
Most angiosperms are pollinated by animals which carry pollen from one flower to another.

13. Animal-pollinated plants have traits, such as bright colors and sweet nectars.

14. The egg and sperm unite in a process called fertilization.
The two cells (egg and sperm) become one new cell called a zygote.
The zygote begins to grow and develops into a seed.
zygote
zygote

15. As the seed develops, the ovary grows into a fruit.
This means that anything you eat with a seed(s) is a ripened ovary.

16. Different fruits
Fleshy fruits - apples, grapes, melons, tomatoes, squash, cucumbers
Dry fruits – peanuts, walnuts, wheat, barley, corn, rice

17. Examples of ripened ovaries.

18. Which of these are fruits (ripened ovaries)?
Hint: If it has a seed, it’s a fruit.

19. Seed Dispersal By animals – Seeds contained in sweet, fleshy fruits.
Seeds are covered with tough, protective coatings

20. By wind & water
Seeds are typically lightweight

21. Seeds with wings

22. Seeds with spikes