2. Angiosperms

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

4. 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

5. 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

6. Monocots vs. Dicots Know this one ehh Know this one ehh

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

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

11. Veins run parallel

12. Veins run parallel

13. Veins branch outward

14. Angiosperm Life Spans Three Life Span Types: 1) Annuals –Seed grows… –Produce flowers & seeds… –Die 2) Biennials –1 st year: Seed grows and stores food –2 nd year: grows more… makes flowers & seeds… dies 3) Perennials –Live for more than 2 years –May take decades to grow fruit

15. sepals petals Reproductive structure of angiosperms Sepals –o–outer ring of leaves –p–protection Petals –I–Inner ring of leaves –B–Brightly colored to attract pollinators Male and female organs found inside Flowers

16. Tulip Pistil and Stamen male female

17. Lily Pistil and Stamen male female

18. Pistil and Stamen male female

19. Pistil and Stamen male female

20. 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

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

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

23. Angiosperm Life Cycle Here is an apple tree….lets zoom into an individual flower. 1) Pollen sticks to animal or released into wind 2) Insect flies away covered in 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............

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.

26. 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.

27. 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 seed ovary

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) ovary

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. 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)

31. seed A few hours later…

32. Seedling begins to grow…

33. Years later….

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

35. End of the Semester!

36. 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.