ANGIOSPERMS & GYMNOSPERMS IN 103 Vocabulary Headings Important Info

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

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

Two Groups: Moncots & Dicots

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

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

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

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?

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

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.!!!

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

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

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