1. Flower Parts, Angiosperm Life Cycle, and Seeds

3. Petal-
Petals are used to attract insects into the flower, they may have guidelines on them and be scented.
Stigma-
Is covered in a sticky substance that the pollen grains will adhere (stick) to.
Style-
The style raises the stigma away from the Ovary to decrease the likelihood of pollen contamination. It varies in length.

4. Ovary-
This protects the ovule and once fertilization has taken place it will become the fruit.
Ovule-
The Ovule is like the egg in animals and once fertilization has taken place will become the seed.
Flower stalk-
Gives support to the flower and elevates the flower for the insects.
Sepal-
Sepals protect the flower while the flower is developing from a bud.

5. Filament-
This is the stalk of the Anther.
Anther-
The Anthers contain pollen sacs.
The sacs release pollen on to the outside of the anthers that brush against insects on entering the flowers.
Once the pollen is deposited on the insect..it is transferred to the stigma of another flower.
The ovule is then able to be fertilized.

6. Male Parts Stamen Female Parts Pistil
Anther
Filament
Ovary Stigma Ovule Style

7. 2 Types of flowers: Perfect vs. Imperfect
a flower that has either all male parts or all female parts
Imperfect-
EX: cucumbers, pumpkin, and melons
a flower that has both male and female parts in the same flower
Perfect-
EX: roses, lilies, and dandelions

8. Complete vs. Incomplete Flowers
Has all 4 main parts
Sepal, petal, pistil, and stamen
Ex.-
Incomplete Flowers
One or more of the 4 main parts of flower is missing
Ex. -windflower

9. Take another look...

10. Angiosperm Life cycle
Pollination-transfer of pollen from the stamen to the pistil.
Pollen-yellow powder that contains sperm cells.
Pollinators transfer pollen’
Ex.-bees, birds, and other animals

11. How are pollinators attracted to a flower?
Nectar –sweet liquid produced by flowers to attract pollinators.
Flowers-colorful petals, interesting shapes, and scent that appeal to pollinators
Pollination can also occur with the help of the wind. Ex-grasses and some trees

12. Seeds Seeds have 3 main parts
Embryo-offspring that can grow into a new plant
Cotyledon-food supply for the embryo
Seed coat- tough outer covering
Germination-development of a new
seed into a plant

13. Seed Dispersal Float and carried by the wind
Float and be carried by water (coconuts)
Cling to animal fur or feathers
Seed surrounded by fruit which is eaten by animals then passes through their digestive system