What is the name of each of these organs?

Capsule-

Flowers

Cones-

What is the job of theseorgans?

To produce offspring!

Reproductive Structures In Plants

Plants produce offspring using

either seeds or spores.

Sexual Reproduction in Plants

•Plants can reproduce sexually.

•The offspring of plants that reproduce sexually are genetically different from their parents and one another.

Sexual Reproduction in Plants

•Genetic Variation: The differences between sexually produced organisms.

•Variation increases the chance that some offspring will survive, because they have traits useful in a changing environment.

Sexual Reproduction in Seedless Plants Page

159• Release of

spores: under the

right conditions

spores are

released from a

capsule.

Sexual Reproduction in Seedless Plants

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• Fertilization:

occurs when a

sperm cell Swims

to an egg cell.

• A fertilized egg

then grows into a

stalk like

structure, on

which spores are

made.

Sexual Reproduction in Seedless Plants

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Ferns and mosses do not make

seeds. They reproduce using

spores.

•Spores are microscopic

specks of living material.

Spores

Sexual Reproduction in Seedless Plants Page

159• Mosses do NOT

produce seeds.

• Do NOT have

flowers.

• Spores: released

by the parent may

become a new

plant.

• Require WATER

for reproduction.

Reproduction in Seed Plants

Cone Bearing Plants

• Some plants do not produce spores

or flowers.

• Cone –bearing plants produce

seeds in cones.

Flowering PlantsPlants that have flowers and

produce seeds.

Flowering Plants

• Flowering plants reproduce sexually.

• In order to produce seeds, the eggs in a flower must be pollinated and fertilized.

Parts of A Flower

Male Parts of the Flower

Male Parts of the Flower

Female Parts of the Flower

Female Parts of the Flower

PollinationPollination is the

movement of pollen

from the male part

of a plant to the

female part.

Fertilization•Occurs when the sperm and egg combine.

•Requires a pollen tube to be formed.

Pollen Tube

Egg

How does the flower structure relate to its function?

Organ StructuralObservations

Function

FlowerColorful, long tubular petals, Reproductive organ (male) near edge

Attract pollinators* for reproduction(*transport sperm (pollen) to egg)

://flower pollination

Pollinator

•Any type of animal or insect that helps transfer pollen is a pollinator.

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Seed Dispersal

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Germination•When a seed sprouts and grows into a plant.

•Roots and shoots sprout .