Plant reproduction ch4 book b


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Plant reproduction ch4 book b

  1. 1. Introduction to PlantReproduction
  2. 2. Define Propagation Propagation  The reproduction of plants either sexually or asexually.
  3. 3. Define sexual reproduction andthe terms associated with it. Sexual Reproduction:  The union of the female and male sex cells to produce a seed (embryo).  Ovule: female sex cell.  Pollen: male sex cell.  Embryo (seed-germ): an immature plant.  *Sexual reproduction involves the creation of a genetically new individual.
  4. 4. List and explain the differenttypes of seeds. Monocots:  Seeds with one seed leaf.  Leaves have parallel veins.  1 solid seed.  Stem vacular bundles scattered.  Roots are adventitious  Flowers in multiples of three.  Pollen with single furrow or pore
  5. 5. Dicots Seeds with 2 seed leaves or 2 cotyledons Veins are “webbed.” Pollen with three furrows or pores. Flowers parts in multiples of four or five. Stem vascular bundles in a ring.
  6. 6. Monocots
  7. 7. Dicot Leaf
  8. 8. Dicot 
  9. 9.
  10. 10. List and explain the differenttypes of flowers. Complete Incomplete
  11. 11. Complete Flowers Sepals The outer part of the flower.  In open flowers, the sepals are found at the base of the plant.
  12. 12. PetalsThe brightly colored, soft tissue that attractsinsects.
  13. 13. Stamens The male part of the flower that has an anther at the end of it to produce pollen.
  14. 14. Pistil Stigma  The opening of the pistil. Style  The tube-like structure that connects the stigma and ovary. Ovary  The site of fertilization and growth of the seed.
  15. 15. Stigma, Style &Ovary
  16. 16. Ovary
  17. 17. Complete Flower
  18. 18. Complete Flower
  19. 19. Incomplete Flower An incomplete flower is one that lacks one or more of the four principal components identified in a complete flower.
  20. 20. Explain the difference between aperfect and imperfect flower A perfect flower is one with both the stamen and pistil An imperfect flower is one that lacks one of the sex organs.
  21. 21. Define pollination, fertilizationand germination. Pollination  The transfer of pollen from an anther to a stigma of a flower of the same species. Fertilization  The union of the pollen and ovule cells. Germination  The sprouting of a seed.
  22. 22. Define asexual reproduction Asexual Reproduction:  The reproduction of a plant without the uniting of a pollen and ovule.  Asexual reproduction is often referred to as vegetative propagation since no seed is involved in the formation of the new plant.  It is known as a clone.  Leaves, stems or roots may be used to grow a new plant.  *Produces a genetically identical plant.
  23. 23. List the benefits of vegetative propagation. True traits of the parents  Maintains genetic purity with  100% replication of parent plant. No seed  Some plants do not produce a seed or the seeds are too small to work with. Accelerates the time it takes to get a new plant to the market  Traditionally, it would take up to 40 years to get a new plant to the general public; however, micropropagation can yield marketable levels of plants within 8 to 12 years.
  24. 24. List and explain the different types ofvegetative propagation. Layering  Involves getting roots to grow from the stem. I.e., magnolia tree Cutting  Using a short section of plant stems for propagation. Budding  Taking a bud from one plant and moving it to another. Grafting  Placing a section of a stem of one plant onto another plant. Tissue culture  Taking a group of cells or a single cell and growing it to a plant.
  25. 25. Layering 
  26. 26. Cutting 
  27. 27. Tissue Culture 