Bell Ringer: 8.29.2013Bell Ringer: 8.29.2013

1.1. Name the two structure that make Name the two structure that make up the stamen.up the stamen.

2.2. Name the 3 structure that make up Name the 3 structure that make up the carpel. the carpel.

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Bell Ringer: 8.29.2012Bell Ringer: 8.29.2012 1. 1. Water is able to move up through the Water is able to move up through the

xylem because of root pressure, xylem because of root pressure, capillary action, and:capillary action, and:

a)a) TranspirationTranspiration

b)b) CondensationCondensation

c)c) EvaporationEvaporation

d)d) Guard cellsGuard cells

2. Define Transpiration.2. Define Transpiration.

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Plant Plant ReproductiReproducti

on of on of AngiosperAngiosper

msms

Goal:Goal:

Label and explain function of plant Label and explain function of plant reproductive structures.reproductive structures.

Explain process of plant reproductionExplain process of plant reproduction

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Structure of Typical Flower Structure of Typical Flower (Reproductive organ)(Reproductive organ)

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Role of Flower PartsRole of Flower Parts

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•PetalsPetals: : Attract insects and other pollinators to the Attract insects and other pollinators to the flower. Often very colorful.flower. Often very colorful.•SepalSepal: enclose flower bud before it opens and protect : enclose flower bud before it opens and protect flower as it develops.flower as it develops.•““P.S.” P.S.” Male PartsMale Parts•AntherAnther: : Located at top of filament (think “antlers”). Located at top of filament (think “antlers”). Where Where pollen grains pollen grains are produced. Pollen grains are produced. Pollen grains contain the male reproductive cells (i.e. sperm)contain the male reproductive cells (i.e. sperm)•FilamentFilament: : Long stalk that supports anther.Long stalk that supports anther.•The Filament and Anther together make up the The Filament and Anther together make up the StamenStamen. (staMEN). (staMEN)

Role of Flower PartsRole of Flower PartsFemale PartsFemale Parts• Stigma:Stigma: Top of carpel. Sticky portion where pollen Top of carpel. Sticky portion where pollen

initially lands. “stigma sticks”initially lands. “stigma sticks”• Style:Style: The stalk of the carpel that contains the pollen The stalk of the carpel that contains the pollen

tube through which pollen travels to ovary.tube through which pollen travels to ovary.• Ovary:Ovary: Located at base of carpel. Where one or more Located at base of carpel. Where one or more

ovules is located. Eventually matures into fruit after ovules is located. Eventually matures into fruit after fertilization. fertilization.

• Ovule:Ovule: Structure that contains female reproductive cells Structure that contains female reproductive cells (i.e. eggs). Matures into seed when fertilized.(i.e. eggs). Matures into seed when fertilized.

• Stigma + Style + Ovary = Stigma + Style + Ovary = Carpel Carpel (aka pistil) which is (aka pistil) which is innermost part of flower.innermost part of flower.

• ““S.S.O.C.” (Top to bottom)S.S.O.C.” (Top to bottom)

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Structure of Typical Flower Structure of Typical Flower (Reproductive organ)(Reproductive organ)

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Other Flowering Plant Reproductive Structure Other Flowering Plant Reproductive Structure Organizations!Organizations!

Not all flowering plants have the “typical” flower structure…Not all flowering plants have the “typical” flower structure…They vary enormously in structure!!!!They vary enormously in structure!!!!

A tulip has only one carpel while a wild rose has several.A tulip has only one carpel while a wild rose has several. Flowers like sunflowers contain clusters of several individual Flowers like sunflowers contain clusters of several individual

flowers that are reproductive (called disk flowers).flowers that are reproductive (called disk flowers).

SunflowerSunflower

Cross-sectionCross-section

Flowering Plants Reproduction Flowering Plants Reproduction CycleCycle

Not all fruits look Not all fruits look the same….the same….

OvaryOvary

Flowering Plants Reproduction Flowering Plants Reproduction CycleCycle

During the process of During the process of fertilization::

1)1) Pollen from anther lands on the stigma Pollen from anther lands on the stigma

2)2) A tube grows down the style and enters the ovary.A tube grows down the style and enters the ovary.

3) Male reproductive cells (pollen) travel down the 3) Male reproductive cells (pollen) travel down the tube and join with the ovule (egg), fertilizing it. tube and join with the ovule (egg), fertilizing it.

4) The fertilized ovule becomes the 4) The fertilized ovule becomes the seedseed, and the , and the ovary becomes the ovary becomes the fruitfruit..

Why Flowers???Why Flowers??? Why would plants put material and energy toward flowers???Why would plants put material and energy toward flowers??? Some flowers rely on wind to help with Some flowers rely on wind to help with pollinationpollination (the (the

transfer of pollen from the male to the female reproductive transfer of pollen from the male to the female reproductive structures).structures).

Flowers are able to attract organisms like insects, bats and Flowers are able to attract organisms like insects, bats and birds to help with birds to help with pollinationpollination..

Some flowers have gotten very good at this…Some flowers have gotten very good at this…

http://www.youtube.com/watch?v=-h8I3cqpgnA

Why Fruits??? Why Fruits???

SEED SPREADING TACTIC NUMBER 1: BY ANIMAL SEED SPREADING TACTIC NUMBER 1: BY ANIMAL EATINGEATING

The fruit surrounds and protects the seed.The fruit surrounds and protects the seed. Some fruits (the sweet and fleshy ones) can attract Some fruits (the sweet and fleshy ones) can attract

animals to eat the fruit. animals to eat the fruit. The seeds pass through their digestive system The seeds pass through their digestive system

unharmed and sprout in the feces eliminated from unharmed and sprout in the feces eliminated from the animal.the animal.

Why Fruits???Why Fruits???

OTHER SEED SPREADING TACTICS OTHER SEED SPREADING TACTICS INCLUDE:INCLUDE:

-Wind-Wind

-Water-Water

-Explosion/bursting-Explosion/bursting

-Fruits that stick to animal fur-Fruits that stick to animal fur

Why Fruits???Why Fruits???

The shape of fruit tells you a lot about how it is spread.The shape of fruit tells you a lot about how it is spread.

What Happens to the Seed?What Happens to the Seed?

GerminationGermination: early growth stage of plant : early growth stage of plant from seedfrom seed

Flower Dissection- Alstroemeria! Flower Dissection- Alstroemeria!

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