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Asexual reproduction

Asexual reproduction . Topic Two. Asexual reproduction- one parent creates a new organism, or offspring. Offspring of PROKARYOTIC organisms will have hereditary material that is identical to the parent EUKARYOTIC organisms use mitosis (sexual reproduction) to produce new functioning cells

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Asexual reproduction

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  1. Asexual reproduction Topic Two

  2. Asexual reproduction- one parent creates a new organism, or offspring

  3. Offspringof PROKARYOTIC organisms will have hereditary material that is identicalto the parent • EUKARYOTIC organisms use mitosis (sexual reproduction) to producenewfunctioning cells • Eukaryotic organisms need this process for the growth and repair of cells

  4. Binary Fissionis equal division • Simplest form of asexual reproduction • Occurs when the organism does not have a nucleus • Genetic material is copied and the organism divides • Examples…bacteria, protozoa, algae

  5. Paramecium

  6. Budding • Parent divides into a new organism • Grown organism eventually breaks away • Examples…sponges, hydra, worms (some)

  7. Hydra

  8. Spore Formation • Spores (haploidcells) develop • Spores grow into a new organism • Examples… mold, fungi (mushrooms), algae

  9. Regeneration • Regrowth of a lost body part • Examples… sea stars, lizards, some mammals (even humans?)

  10. Natural Vegetative Reproduction • Bulbs: short underground stem surrounded by thick, fleshy leaves which stores food • Examples… tulips, onions, lilies

  11. 2. Tubers: enlarged part of an underground stem • Examples… Potato, rutabaga, yam

  12. 3. Runners: stem that grows sideways above the ground • Examples… strawberries, spider plants

  13. Artificial Vegetative Reproduction • Cutting: uses the stem, leaf or root of a plant to produce a new individual • Stem cutting- a branch is placed in water until roots develop. Once roots develop, the cutting becomes an independent plant Examples… roses, ivy, grapevines

  14. Grafting: stem or bud is removed from one plant and joined permanently to the stem of a closely related plant, after time the two plants grow together • Examples… lilacs, peach and avocado trees, seedless fruit

  15. Advantages • Produces plants exactly like the parent • Development of a plant is much faster than when grown from a seed • Can obtain higher yields of fruit or nuts • Can produce seedless fruits

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