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Topic : Reproduction Aim : Describe the different types of asexual reproduction.

Topic : Reproduction Aim : Describe the different types of asexual reproduction. Do Now : Take out HW ditto Describe 2 characteristics of mitosis. HW : Ditto – Immunity Review Castle Learning Immunity due Monday. Letter A indicates a Centromere Centriole Ribosome Nucleolus

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Topic : Reproduction Aim : Describe the different types of asexual reproduction.

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  1. Topic: Reproduction Aim: Describe the different types of asexual reproduction. Do Now: Take out HW ditto Describe 2 characteristics of mitosis. HW: Ditto – Immunity Review Castle Learning Immunity due Monday

  2. Letter A indicates a • Centromere • Centriole • Ribosome • Nucleolus 2. Letter B indicates a • Cell plate • Chromatid • Spindle fiber • Centrosome A B

  3. Binary Fission

  4. EQUAL DIVISION of cytoplasm • Ameba, paramecium, bacteria

  5. Budding

  6. UNEQUAL division of cytoplasm • The “bud” has same # of chromosomes

  7. Ex: hydra, yeast

  8. Sporulation

  9. Formation of spores = cells that divide by mitosis into new organism • http://www.youtube.com/watch?v=0imKJ1vnTpk

  10. Ex: Bread mold, mushrooms…

  11. Regeneration

  12. a. Ability to regrow lost body parts

  13. b. New organism from part of the parent

  14. Ex: starfish, lobsters, lizards

  15. Salamanders: Salamanders can regenerate legs. When a salamander is in the larval stage, it can regenerate a limb in thirty to forty days! Adult salamanders can also regenerate limbs, but it takes much longer and the leg is not as large as the original one.

  16. Lizards: Lizards have the ability to replace lost limbs or a lost tail. This is important because when a predator such as a hawk captures the tail, the lizard can escape. The new tail lacks the backbone of the original tail.

  17. Crayfish: Cray fish can regrow claws, pinchers, or legs. It is easy to recognize the regenerated part because it is smaller than the other parts. Just like the lizard, it can break off a claw or leg so that it can escape when captured by a predator.

  18. Vegetative Propagation • Asexual rep in plants

  19. Types: a. Runners = stems that grow over surface of soil • Ex: Strawberries

  20. b. Bulbs = underground stems for food storage • Ex: tulips, onions

  21. c. Tubers = enlarged part of underground stem that store food • Ex: Potatoes

  22. Artificial Vegetative Propagation • Occurs as a result of human activities • Types:

  23. a. Cuttings = any part from plant that can develop into new plants

  24. b. Grafting = cutting from one plant attached to stem of another plant • Ex: Seedless Oranges

  25. Let’s review! • Identify the type of cell division that is used during asexual reproduction. • Explain the difference between binary fission and budding. • Describe regeneration and sporulation. • Describe vegetative propagation and the different types.

  26. The type of asexual reproduction in which involves the production of single cells by mitosis that are released into the environment is called • regeneration • binary fission • sporulation • vegetative propagation

  27. The type of asexual reproduction in which one cell divides into to two cells that are of equal size is called • regeneration • binary fission • sporulation • vegetative propagation

  28. Asexual reproduction in plants is known as • regeneration • vegetative propagation • binary fission • sporulation

  29. http://www.youtube.com/watch?v=Hp0IE9uUNAE&feature=related http://www.youtube.com/watch?v=vNk8GhlBn6I

  30. Identify the type of asexual reproduction described. • An organism grows back a lost body part. • Unequal division of cytoplasm. • Specialized cells are released and eventually develop into a new organisms that are identical to the parent. • Asexual reproduction in plants. • Equal division of cytoplasm.

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