{ Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts: sepals ...

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{ Reproduction in Flowering Plants

Transcript of { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts: sepals ...

Page 1: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

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Reproduction in Flowering Plants

Page 2: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

The Parts of a Flower

Most flowers have four parts: sepals petals stamens Pistil

Page 3: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

The parts of a flower Sepals protect the

bud until it opens. Leaves that cover the plant

Petals attract insects. Stamens make

pollen. Pistil grow into fruits

which contain the seeds.

Page 4: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Stamen (male) Anther: pollen

grains grow in the anther.

Filament: Holds up the anther

When the grains are fully grown, the anther splits open.

Page 5: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Pistil (female) Stigma Style Carpel (ovary) Ovules (eggs) 1 in each plant.

Located in the center

Page 6: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Label the Pictures

Page 7: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Pollination Flowering plants

use the wind, insects, bats, birds and mammals to transfer pollen.

Pollen moves from the stamen part of the flower to the stigma part of the flower.

Page 8: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Pollination

A flower is pollinated when a pollen grain lands on its stigma.

Each carpel grows into a fruit which contains the seeds.

Page 9: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Seed dispersal

Seeds are dispersed in many different ways:

Wind Explosion(Eject) Water Animals(birds,

dogs…)

Page 10: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

Wind pollination Some flowers, such

as grasses, do not have brightly coloured petals and nectar to attract insects.

They do have stamens and carpels.

These flowers are pollinated by the wind.

Page 11: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

How animals help seed dispersal

Some seeds are hidden in the ground as a winter store.

Some fruits have hooks on them and cling to fur or clothes.

Page 12: { Reproduction in Flowering Plants. The Parts of a Flower Most flowers have four parts:  sepals  petals  stamens  Pistil.

How birds help seed dispersal

Birds and animals eat the fruits and excrete the seeds away from the parent plant.