Angiosperms

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Angiosperms
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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

3
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
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Angiosperm Groups

• 2 groups Monocots and Dicots (based on seed
  type)
• Cotyledon embryonic leaf
• Two Categories
• Monocots embryo with 1 seed leaf
• Dicots embryo with 2 seed leaves

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Monocots vs. Dicots
Easy to see
Easy to see
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Apple Tree Monocot or Dicot?
2
3
1
Net-like veins
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5
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Monocot or Dicot?
2
3
1
4
6
5
8
Monocot or Dicot?
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Monocot or Dicot?
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Monocot or Dicot?
Veins run parallel
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Monocot or Dicot?
Veins run parallel
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Monocot or Dicot?
Veins branch outward
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Angiosperm Life Spans
Seed grows in 2011
Seed grows in 2010
Plant dies in winter 2010but seeds will grow in
2011
Plant dies in winter 2011
Plant grows during the spring summer of 2010
Plant grows during the spring summer of 2011
Flower grows during autumn of 2010
Flower grows during autumn of 2011

• Three Life Span Types
• 1. Annuals
• 1 year Seed growsproduce flowers seedsdie

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Angiosperm Life Spans
Seed grows in 2010
Plant dies in winter of 2011but seeds grow next
year
Plants grows during spring summer of 2010
Plant goes dormant during winter of 2010
Flower seeds created during autumn of 2011
Plant grows during spring summer of 2011

• Three Life Span Types
• 2. Biennials
• 1st year Seed grows and stores food
• 2nd year grows more, makes flowers seedsdies

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Angiosperm Life Spans
Seed grows in 2010
Plant grows during spring summer of 2010
Plant grows during spring summer of 2011
Plant grows during spring summer of 2012
Plant grows during spring summer of 2013
Plant dies in winter of 2013
Plant goes dormant during winter of 2010
Plant goes dormant during winter of 2011
Plant goes dormant during winter of 2012
Plant goes dormant during winter of 2013
Flower seed grows during autumn of 2010
Flower seed grows during autumn of 2011
Flower seed grows during autumn of 2012
Flower seed grows during autumn of 2013

• Three Life Span Types
• 3. Perennials
• Live for more than 2 years

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Flowers

• Reproductive structure of flowering plants
• Sepals
• outer ring of leaves
• protection
• Petals
• Inner ring of leaves
• Brightly colored to attract pollinators
• Open petals sepals reveal male and female
  structures

petals
sepals
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Tulip Pistil and Stamen
female
male
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Lily Pistil and Stamen
female
male
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Pistil and Stamen
female
male
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Pistil and Stamen
female
male
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Flowers

• Female Carpel
• Inner most part
• Ovary within the base
• Female gametophyte
• Becomes the fruit when fertilized
• Stigma sticky tip, collects pollen
• Male Stamen
• Anther produces pollen
• Pollen male gametophyte

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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
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Pollen stick to animal or released into wind
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Insect finds a new flower to feed on
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Pollen transferred to the stigma. Pollen tube
grows towards the egg. Pollen nucleus travels
down pollen tube to fertilize the egg
.
egg
zygote
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Flower petals start to fall off and dies. Fruit
develops
zygote
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Fruit falls to ground
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Animals eat fruit.seeds come out the other
endcycle repeats
seed
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HW Bring a flower to school. One with distinct
male and female parts.
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Tulip Pistil and Stamen
female
male
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Lily Pistil and Stamen
female
male
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Pistil and Stamen
female
male
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Pistil and Stamen
female
male
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End of the Semester!
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Kobe Kuiz

1. What is the reproductive structure of angiosperms
   called?
2. What structure protects the seeds of angiosperms?
3. Why are flowers and fruits often brightly
   colored?
4. Be able to identify the parts of a flower
   diagram.
5. Which flower part produces pollen?
6. Which flower part will pollen land upon?
7. Which flowers only live for 2 years and then die?
8. Practice the monocot/dicot sample questions.