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Angiosperms

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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  1. Angiosperms

  2. 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

  4. 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

  5. Monocots vs. Dicots Easy to see Easy to see

  6. Apple Tree: Monocot or Dicot? 2 3 1 Net-like veins 4 5

  7. Monocot or Dicot? 2 3 1 4 6 5

  8. Monocot or Dicot?

  9. Monocot or Dicot?

  10. Monocot or Dicot? Veins run parallel

  11. Monocot or Dicot? Veins run parallel

  12. Monocot or Dicot? Veins branch outward

  13. Angiosperm Life Spans Seed grows in 2011 Seed grows in 2010 Plant dies in winter 2010…but seeds will grow in 2011 Plant dies in winter 2011 Plant grows during the spring & summer of 2011 Plant grows during the spring & summer of 2010 Flower grows during autumn of 2010 Flower grows during autumn of 2011 • Three Life Span Types: 1. Annuals • 1 year: Seed grows…produce flowers & seeds…die

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

  15. 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 2011 Flower & seed grows during autumn of 2012 Flower & seed grows during autumn of 2013 Flower & seed grows during autumn of 2010 • Three Life Span Types: 3. Perennials • Live for more than 2 years

  16. Flowers petals sepals • 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

  17. Tulip Pistil and Stamen female male

  18. Lily Pistil and Stamen female male

  19. Pistil and Stamen female male

  20. Pistil and Stamen female male

  21. 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

  22. Self-Pollination(own pollen fertilizes own egg) . . .

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

  24. Angiosperm Life Cycle

  25. Pollen stick to animal or released into wind

  26. Insect finds a new flower to feed on

  27. Pollen transferred to the stigma…. Pollen tube grows towards the egg…. Pollen nucleus travels down pollen tube to fertilize the egg . egg zygote

  28. Flower petals start to fall off and dies…. Fruit develops zygote

  29. Fruit falls to ground

  30. Animals eat fruit….seeds come out the other end…cycle repeats seed

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

  32. Tulip Pistil and Stamen female male

  33. Lily Pistil and Stamen female male

  34. Pistil and Stamen female male

  35. Pistil and Stamen female male

  36. End of the Semester!

  37. 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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