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Sexual Reproduction

Sexual Reproduction. Flowering Plants. Asexual/Sexual Christmas Cacti. Asexual/Sexual Christmas Cacti. 1. Angiosperms Flowering plants. 2. Gymnosperm Cone producing plants. Two Types of Seed Producing Plants. 1. Complete Has both male and female structures

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Sexual Reproduction

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  1. Sexual Reproduction Flowering Plants

  2. Asexual/Sexual Christmas Cacti

  3. Asexual/Sexual Christmas Cacti

  4. 1. Angiosperms Flowering plants 2. Gymnosperm Cone producing plants Two Types of Seed Producing Plants

  5. 1. Complete Has both male and female structures Most flowers are this type 2. Incomplete Has either male or female structures Examples: zucchini, pumpkins, squash Two Types of Flowers

  6. Picture of Zucchini Incomplete Flower Petals Female Ovary

  7. Parts of a Flower

  8. Stamen • Stamen (#1) • Male portion of flower • Anther (#2) • Produces pollen • Filament (#3) • Holds the anther up • Pollen (#4) • Male sex cell

  9. Flower Diagram

  10. Pistil • Pistil (#5) • Female portion • Stigma (#6) • Top sticky portion where pollen attaches • Style (#7) • Middle portion that gives height • Ovary (#8) • Produces ovules (#9) • Ovules (#9) • Female sex cell

  11. Flower Diagram

  12. Other structures • Petals (#10) • Colored portion • Attracts pollinators • Protects inner parts • Sepals (#11) • Usually green • Protects flower in bud stage

  13. Flower Diagram

  14. Flower Part Video

  15. 1. Self Pollination Pollen from the same flower fertilizes ovules Stamen is taller than pistil 2. Cross pollination Pollen from another flower fertilizes ovule Stamen is lower than pistil Two Types of Pollination

  16. Process of Pollination • 1. Pollen lands on sticky stigma (pistil) • 2. A hollow tube (pollen tube) grows down the pistil to the ovary • 3. The nucleus (which contains chromosomes) moves down the pollen tube and combines with the nucleus of the ovule • 4. Fertilization occurs creating a seed (baby plant

  17. Video of Pollination

  18. Video : Seeds

  19. Snapdragon Flower caliban.mpiz-koeln.mpg.de/.../ flower.html

  20. Blow up of an anther caliban.mpiz-koeln.mpg.de/.../ flower.htm

  21. Cut away of an ovary caliban.mpiz-koeln.mpg.de/.../ flower.html

  22. Review of Flower Parts

  23. Tulip

  24. Lily

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