Plant Reproduction

3.2 pages 66-69

Plant Parts: Male

Pollen:

Anther:

Filament:

Carries the plant sperm

Where the pollen is made

The stem of the anther

Plant Parts: FemaleStigma:

Style:

Ovary:

Ovules

Sticky part where pollen lands.

Tube that supports the stigma and carries sperm to the ovary.

Contains the ovules.

Each contains an egg.

Pistil

Flowering Plants

Largest most _____ group of plants.Flowering plants are called _________.Plants that do not flower such as pine trees are called __________.Flowering plants reproduce through _________ reproduction.

diverse

angiosperms

gymnosperms

sexual

Sexual Reproduction

Sexual reproduction requires a ______ and an _____.In flowering plants these can be located:

spermegg

On the same flowerOn the same plant but not on the same flowerOn different plants

The magic begins…..

Pollination:Occurs when the pollen comes in contact with the stigma.

The magic continues:

Fertilization:Occurs when the sperm joins with the egg.

The pollen grain grows a long tube that carries the sperm down the style to the egg waiting in the ovary.

Making a Seed…

Each _______ becomes a seed.The flower petals _______________.The _______ becomes the fruit.The fruit ripens and the seeds are ____________.Disperse:

ovule

die and fall away

ovary

dispersed

To drive or send off in various directions; to scatter

Types of Dispersal

Eaten:

Hitchhike:

Wind:

Animals and birds can eat the fruit and then “deposit” the seeds in a nice pile of fertilizer.

Some fruits are covered in barbs that attach to fur and clothing and the seed is carried away.

Wind can carry a seed away from the parent plant.

From Seed to Plant

Once the seed is mature it may become _________.How long can dormancy last?

Breaking dormancy:

dormant

The oldest seed known to have germinated was 3,000 years old.

Ideal conditions (water, sunlight, nutrients)Extreme conditions (freezing or fire)

Germination

Under the right conditions a seed will germinate.Germinate:To begin to grow or develop. To sprout.

Asexual ReproductionConditions aren’t always right for sexual reproduction so some flowering plants can reproduce asexually as well.Plantlets:

Tubers:

Runners

Tiny plants that develop and fall off.

Underground stems that produce new plants.

Above ground stems that produce new plants.