The Power of Flowers

1
The Power of Flowers
2
The Structure of a Flower

3
Flower Parts

• Sepals
• - Outermost portion of flower
• - Protects flower bud from insect damage and
  drying out

4
Flower Parts

• Petals
• Usually brightly colored
• Often have perfume or nectar to attract
  pollinators
• Provides surface for insects to rest while feeding

5
Flower Parts

• Stamens
• Contains pollen-producing anther at tip
• Thin filament attaches anther to flower stem
• When pollen grains mature, anther splits open to
  release them

6
Flower Parts

• Pistil
• Contains 3 parts stigma, style, ovary
• Stigma is sticky surface where pollen lands
• Style connects stigma to ovary
• Ovary, which becomes the fruit, contains ovules
  which when fertilized, become a seed

7
Pollination!

• - Wind scatters pollen randomly
• - Nectar attracts animal pollinators
• - Colors signal appropriate pollinators
• - Scent attracts pollinators

8
Flower Structure Terms

• COMPLETE FLOWER
• - has all 4 organs
• - sepals, petals, stamens, and pistils
• INCOMPLETE FLOWER
• - lacks 1 or more organs

9
Question ?

• How are different flower shapes important to a
  plants survival?

Hmm
10
The Answer is
The shape of the flower may promote different
pollination methods. For example, tube-shaped
flowers are probably pollinated by animals.
Groovy!