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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: 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 ehh Know this one ehh ehh Know this one

  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 • 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

  14. 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

  15. Tulip Pistil and Stamen female male

  16. Lily Pistil and Stamen female male

  17. Pistil and Stamen female male

  18. Pistil and Stamen female male

  19. 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

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

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

  22. 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 . . . . . . . . . . . . . . . . . . . . . .

  23. 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 . . . . . . . . . . . .

  24. 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

  25. 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

  26. 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 seed . 4) Pollen tube grows towards ovary 5) Nucleus travels down pollen tube to fertilize egg 6) Zygote hardens into seed…flower starts to die

  27. 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)

  28. 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)

  29. 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)

  30. A few hours later… seed

  31. Seedling begins to grow… seed

  32. Years later….

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

  34. End of the Semester!

  35. 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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