1. Chapter 23 Reproduction in Plants
Section 1: Introduction to Plant Reproduction
Section 2: Flowers
Section 3: Flowering Plants

2. Vascular Seed Producing Plants
Angiosperms
“flower seed”
Seeds contained within fruit
Gymnosperms
“naked seed”
Seeds within cones

3. Angiosperms Produce flowers, pollen, fruit Seed enclosed in fruit
Fruit: Ripened part of the plant where seeds are formed
More than ½ of all known plant species are Angiosperms
2 types: Monocots & Dichots

5. Monocots Have one cotyledon: food storage organ of seed
Plants have parallel veins in leaves
Vascular bundles are scattered in stems
Netlike roots
Flower parts in multiples of 3
Seed sprouts 1 leaf
Ex: grasses, lilies, corn

6. Dicots Have 2 cotyledons Netlike veins in leaves
Vascular bundles in a circle inside stem
Taproots: anchor firmly in ground
Flower parts in multiples of 4 or 5
Seed sprouts 2 leaves
Ex: oak, holly, daisies & roses

7. Gymnosperms Non-flowering seed plants Ex: Conifers
Seeds are within cones
Seeds found on scales of cone
Shallow roots
Male cone produces pollen
Female cone produces seeds
Female cone
Male cone

9. Conifer Reproduction and Life Cycle
Chapter 23
Reproduction in Plants
23.1 Introduction to Plant Reproduction
Conifer Reproduction and Life Cycle
Conifers produce two
types of
spores that
develop
into male
and female
groups.

10. At the base of a female cone are two ovules.
Chapter 23
Reproduction in Plants
23.1 Introduction to Plant Reproduction
Female Cones
At the base of a female cone are two ovules.
Each ovule has a produces megaspores that develop in to the female gametophyte.

11. Each male cone contains hundreds of sporangia.
Chapter 23
Reproduction in Plants
23.1 Introduction to Plant Reproduction
Male Cones
Each male cone contains hundreds of sporangia.
The male gametophyte produces sperm, or pollen grains.

12. Chapter 23
Reproduction in Plants
23.1 Introduction to Plant Reproduction
Pollination
Pollination occurs when the pollen grain from a male plant lands on the female reproductive structure.

13. Pollination

14. Pollination Mechanisms
Chapter 23
Reproduction in Plants
23.2 Flowers
Pollination Mechanisms
Flower adaptations that relate to pollination include flower size, shape, color, and petal arrangements.
Animal pollination
Wind pollination
Self pollination

15. Flower Structure Petals: colored portion of flower
Sepals: outermost portion of flower

16. 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

17. Male Parts: Stamen Anther: Produces pollen grains.
Filament: stem-like structure that supports the anther.