1. Ch. 32 – Reproduction in Flowering Plants
Parts of a Flower
1. Petals – colorful
2. Sepals – usually green and below the petals.
3. Receptacle – cup-like support for the ovary.
4. Male Part  Stamen
A. Anther – holds the pollen
B. Filament – stalk that holds the anther.

2. 5. Female Part  Pistil
A. Stigma – swollen opening for the pistil. At the top and usually sticky. Why?
B. Style – stalk-like portion of the pistil.
C. Ovary – bottom portion, usually round.
Contains the egg.

3. Pollination What attracts insects to a plant besides its color? Nectar
2 Types of Pollination
1. Cross-pollination – transfer of pollen from one plant to another plant of the same species.
2. Self-pollination – transfer of pollen within the same plant.

4. Types of Fruit Grain  wheat Pome  pear & apple
Berry  grape, tomato, blueberry
Legume  peas, soybeans
Drupe  cherry, peach, stone seeds
Aggregate fruit  strawberry, raspberry
Achene  sunflower seed
Samara  maple, ash, (helicopters)
Others  Table 32-1 (pg. 635)

5. Parts of a Seed
Seed Coat – outer protection
Radical – develops into a primary root.
Hypocotyl – grows upward above ground into stems and leaves.
Cotyledon – provides food for the seed.

6. Mitosis – Cell division Vegetative growth
What is the male gametophyte called?
Antheridium
What is the female gametophyte called?
Archegonium
Mitosis – Cell division
Vegetative growth
Meiosis – Reduction of division
How gametes are produced
Egg & sperm are produced by meiosis.

7. Life Cycle of Angiosperms
Microspores – are produced in the male cone, which gives rise to a male gametophyte and eventually it will develop into pollen.
Megaspores – are produced in the female cone, that gives rise to the female gametophyte and eventually it into an egg cell (ovule).
Pollen (1N) + Ovule (1N) = Embryo (2N)
Haploid = 1N
Diploid = 2N
The embryo (seed) gets its food to grow from the cotyledon.
Double fertilization occurs in flowering plants. This is where 1 pollen fertilizes the 1st egg for a zygote and a second pollen fertilizes an 2nd egg for the endosperm.