A Day in the Life of a Flower

1
A Day in the Life of a Flower
2
Flower Function

• Primary Function
• To attract animals to pollinate the plant and
  reproduce.

This is necessary in order for the species to
survive!
3
Pollination vs. Fertilization

• There is a difference!!!
• Pollination is the transfer of pollen grain from
  the anther to the pistil
• Fertilization occurs when the sperm joins with
  the egg in the ovary of the plant

4
Where do Seeds come from?

• Seeds are basically enlarged ovules within a
  plants ovary
• Seeds are formed after fertilization occurs
• Seeds are what sprouts new plants!!!

5
Seed Anatomy

1. Seed Coat protective outer layer
2. Embryo earliest stage of development for a
   plant
3. Endosperm (Cotyledon) food storage tissue that
   supports development of growing embryo

6
Seed Anatomy Part 2
Embryo
Endosperm(Cotyledon)
SeedCoat
7
Fruit Formation

• Question What enlarges to become the fruit
  within a plant?
• Answer The Ovary!!!
• Remember When we eat an apple, we are eating the
  ovary which surrounds the seeds or core of the
  apple! Yum!!!

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How do Fruits help Seeds?

1. Provide protection for the developing seeds
2. Can help seeds spread

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Putting it all together!!

• Using figure 24.12 in your book, sketch out the
  life cycle of a flowering plant
• Remember to distinguish between what happens with
  regard to pollination and fertilization