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Of the plant variety

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Reproduction. Has made the continuation of life possible. Ensures the survival of the species. 2 Types of reproduction: - Asexual : only need one living organism – PowerPoint PPT presentation

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Title: Of the plant variety


1
Reproduction
  • Of the plant variety

2
Reproduction
  • Has made the continuation of life possible
  • Ensures the survival of the species
  • 2 Types of reproduction
  • - Asexual only need one living organism
  • - Sexual need a male and a female parent

3
Plants
  • Plants can reproduce both sexually and asexually

4
Asexual reproduction in plants
  • Can reproduce from a part of their own organism
    (root, stem, or leaf)
  • Example Strawberry plants, the trembling aspen
    forest

5
Sexual reproduction
  • 3 forms of sexual reproduction in plant kingdom
  • - flowers (flowering plants)/angiosperms
    (enclosed seed)
  • - cones (conifers)/gymnosperms (naked seed)
  • - spores (algae, mosses, ferns)
  • Seeds contain everything needed to create a new
    plant.
  • -Embryo (small immature plant)
  • - cotyledon (food reserves)
  • - seed coat (protective covering)

6
  • Stamen Male parts
  • - anther where pollen is produced and stored
  • -Pollen grains contain male gametes (spermatozoa)
  • Pistil Female parts
  • - stigma sticky surface which captures pollen
    grains
  • - ovary swollen base that contains female
    gametes (ovules)
  • - ovules female gametes

7
Pollination
  • Two types
  • - Self-pollination pollen is transferred to the
    pistil of the same flower
  • -Cross-pollination the wind and/or insects
    carry pollen to the pistil of a different flower

8
Fertilization
  • During fertilization the male and female gametes
    combine to form a zygote
  • A zygote is the cell containing complete genetic
    material

9
Animal Reproduction
  • Invertebrates about 97 of all animal species
  • They reproduce either asexually or sexually
  • Vertebrates
  • - Most reproduce sexually

10
Sexual Reproduction
  • Male animals ? produce male gametes (spermatozoa)
  • Female animals ?produce female gametes (ova)
  • Both the male/female gametes contain half of the
    genetic material of the future offspring.
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