1. ANGIOSPERMS & GYMNOSPERMS
IN 103
Vocabulary
Headings
Important Info

2. Gymnosperms Produce Cones NO FLOWERS prod.
Pine
Cedar
Produce Cones
NO FLOWERS prod.
“Naked Seed Plants” -seed not covered
Seeds are produced on the scales of female cones
Needle-like or scale-like leaves
EX: Evergreen
Juniper

3. Vascular—Seed Producing Plants
Two groups: Angiosperms & Gymnosperms
ANGIOSPERMS
Produce flowers, pollen, fruit
Seed enclosed (covered) in fruit
Fruit: Ripened part of the plant where seeds are formed.
More than ½ of all known plant species are Angiosperms

4. Two Groups: Moncots & Dicots

5. FLOWERS Functions- reproductive organ of the plant Structures-
Petals- colored portion of the flower
Sepals- outermost portion of the flower
Flowers are colorful to attract pollinators such as insects & birds

6. Female Parts-Pistil
Stigma- sticky top of pistil for pollen to be deposited
Style- stalk connecting stigma to ovary
Ovary- contains ovule, where eggs are found
Ovule- will become seeds if fertilized

7. Male parts- Stamen Anther- top of stamen, releases pollen
Filament- stalk attaching anther to stem

8. TYPES Complete flowers Contain sepals, petals, stamens, and pistils
Incomplete flowers
Lacking 1 or more organs
May have separately sexed flowers
Ex-Holly
What is this flower missing?

9. Pollination Transfer of pollen from one plant to another
Transferred by:
Animals (Cross Pollination):
Usually brightly colored flowers, prod. nectar, for attraction
Wind
Water

10. Reproduction Pollen grain reaches Stigma
Each has 2 haploid sperm cells (1N)
Tube cell forms tube into ovary
Double fertilization occurs
Then, flower parts die & SEED dev.!!!

11. Draw on Left Page Figure 24–7 Page 614 Life Cycle of an Angiosperm
Section 24-1

12. Fruits A fruit is a ripened ovary containing seeds
Protects seed while dev.
Types:
Simple- formed from single ovary
EX: Apple, Pear
Aggregate:- formed from flowers with many ovaries
EX: Blackberry
Multiple: formed from many fused flowers
EX: Pineapple

13. Quiz #4 Flowers IN 95
The stigma, style and ovary make up the _____ of a flower.
A. pistil B. stamen C. gametes D. sepals
2. Pollination can occur by:
A. animals B. water C. both of these D. none
3. Identify this flower as either: Complete (A) or Incomplete (B)
4. ________ fruit form from many ovaries . A. Simple B. Multiple C. Aggregate D. Bold
5. The major difference between Angiosperms & Gymnosperms is that Angiosperms produce…
A. Fruit B. Cones C. Leaves D. Stems