Angiosperms
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Angiosperms. Group 3: Seed producing, Vascular Plants. Type 2: Angiosperms (flowering plants) Flower = reproductive structure Attract animals to help spread pollen Forms fruit to protect and spread seeds Seeds Grow inside the fruit Inside the seed 1. Embryo 2. Food supply.

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Angiosperms

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Angiosperms


Group 3: Seed producing, Vascular Plants

Type 2: Angiosperms (flowering plants)

Flower = reproductive structure

Attract animals to help spread pollen

Forms fruit to protect and spread seeds

Seeds

Grow inside the fruit

Inside the seed

1. Embryo

2. Food supply


Seed Dispersal

  • Fruit brightly colored

    • Attracts animals

  • Seeds pass through animals digestive system

  • Seeds pooped in a new area to grow

Fruit seeds in fox poop


Angiosperm Groups

  • 2 groups: Based on seed type

  • Cotyledon: embryonic leaf

  • Two Categories:

    • Monocots: embryo with 1 seed leaf

    • Dicots: embryo with 2 seed leaves


Monocots vs. Dicots

ehh

Know

this

one

ehh

ehh

Know

this

one


Apple Tree: Monocot or Dicot?

2

3

1

Net-like veins

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5


Monocot or Dicot?

2

3

1

4

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5


Monocot or Dicot?


Monocot or Dicot?


Monocot or Dicot?

Veins run parallel


Monocot or Dicot?

Veins run parallel


Monocot or Dicot?

Veins branch outward


Angiosperm Life Spans

  • Three Life Span Types:

  • 1) Annuals

    • Seed grows…

    • Produce flowers & seeds…

    • Die

  • 2) Biennials

    • 1st year:

      • Seed grows and stores food

    • 2nd year:

      • grows more…

      • makes flowers & seeds…

      • dies

  • 3) Perennials

    • Live for more than 2 years

    • May take decades to grow fruit


Flowers

petals

sepals

  • Reproductive structure of angiosperms

  • Sepals

    • outer ring of leaves

    • protection

  • Petals

    • Inner ring of leaves

    • Brightly colored to attract pollinators

  • Male and female organs found inside


Tulip Pistil and Stamen

female

male


Lily Pistil and Stamen

female

male


Pistil and Stamen

female

male


Pistil and Stamen

female

male


Flowers

  • Male Stamen

    • Anther: produces pollen

  • Female Carpel/Pistil

    • Inner most part

    • Ovary: within the base

      • Contains eggs

      • Grows into fruit when fertilized

    • Stigma: sticky tip, collects pollen


Self-Pollination(own pollen fertilizes own egg)

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Cross-Pollination(pollen of one, fertilizes egg of another)

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Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

Here is an apple tree….lets zoom into an individual flower.

2) Insect flies away covered in pollen

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Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

3) Insect comes across another flower and spreads the pollen

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Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

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3) Insect comes across another flower and spreads the pollen

4) Pollen tube grows towards ovary


Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

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3) Insect comes across another flower and spreads the pollen

4) Pollen tube grows towards ovary

5) Nucleus travels down pollen tube to fertilize egg


Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

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ovary

3) Insect comes across another flower and spreads the pollen

seed

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4) Pollen tube grows towards ovary

5) Nucleus travels down pollen tube to fertilize egg

6) Zygote hardens into seed…flower starts to die


Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

ovary

3) Insect comes across another flower and spreads the pollen

4) Pollen tube grows towards ovary

5) Nucleus travels down pollen tube to fertilize egg

6) Zygote hardens into seed…flower starts to die

7) Ovary grows into a fruit (seeds insides)


Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

3) Insect comes across another flower and spreads the pollen

4) Pollen tube grows towards ovary

5) Nucleus travels down pollen tube to fertilize egg

6) Zygote hardens into seed…flower starts to die

7) Ovary grows into a fruit (seeds insides)


Angiosperm Life Cycle

1) Pollen sticks to animal or released into wind

2) Insect flies away covered in pollen

3) Insect comes across another flower and spreads the pollen

4) Pollen tube grows towards ovary

5) Nucleus travels down pollen tube to fertilize egg

6) Zygote hardens into seed…flower starts to die

7) Ovary grows into a fruit (seeds insides)


A few hours later…

seed


Seedling begins to grow…

seed


Years later….


HW: Bring a flower and leaf to school. One with distinct male and female parts.


End of the Semester!


Kobe Kuiz

  • What is the reproductive structure of angiosperms called?

  • What structure protects the seeds of angiosperms?

  • Why are flowers and fruits often brightly colored?

  • Be able to identify the parts of a flower diagram.

  • Which flower part produces pollen?

  • Which flower part will pollen land upon?

  • Which flowers only live for 2 years and then die?

  • Practice the monocot/dicot sample questions.


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