Plant reprod

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Plant reprod

  1. 1. Reproduction in Plants and Animals
  2. 2. <ul><li>GET YOUR HOMEWORK OUT ON YOUR DESK </li></ul><ul><li>Clear everything else off your desk, except for a pencil </li></ul><ul><li>Get a textbook, paper towel, and a sheet of white computer paper off the front counter and bring them back to your seat (one per table)‏ </li></ul><ul><li>Each student should get a plant worksheet off the front counter </li></ul><ul><li>Wait quietly for further instructions </li></ul>
  3. 3. <ul><li>1. Throw out the plant parts and sheet of blank paper </li></ul><ul><li>2. Put the textbook back on the front table </li></ul><ul><li>3. Have only the three note worksheets and a writing utensil out on your desk </li></ul><ul><li>4. Sit quietly and wait for instructions </li></ul>
  4. 4. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>1. Flower = reproductive organ, makes gametes (sperm and egg)‏ </li></ul><ul><li>2. Seed= Pollen (male) + egg cell (female) = baby plant </li></ul>
  5. 5. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>3. Male organ = Stamen </li></ul><ul><ul><li>makes pollen (sperm cells) </li></ul></ul>
  6. 8. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>4. Female Organ = Pistil-(center)‏ </li></ul><ul><ul><li>Ovary- at bottom </li></ul></ul><ul><ul><li>Fertilization </li></ul></ul>
  7. 15. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>5. Perfect flower = Has a pistil and a stamen </li></ul><ul><li>6. Imperfect flower= Has just a pistil or just a stamen </li></ul>
  8. 17. Comparing Perfect & Imperfect Flowers <ul><li>Makes only pollen </li></ul><ul><li>Imperfect- with stamen </li></ul><ul><li>Makes both pollen and eggs </li></ul><ul><li>Perfect </li></ul><ul><li>The only self-pollinator </li></ul><ul><li>Perfect </li></ul><ul><li>Cannot pollinate any flower </li></ul><ul><li>Imperfect with pistil </li></ul><ul><li>In which plants can fertilization take place? </li></ul><ul><li>Perfect and imperfect with pistil </li></ul>
  9. 18. Plants: Sexual Reproduction Illustrate this process in your notes <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>7. Fertilization </li></ul><ul><ul><li>A. Pollination- pollen transferred from stamen to pistil (wind, animal (bee), gravity)‏ </li></ul></ul><ul><ul><li>B. 2 Pollen grow down into pistil’s ovary </li></ul></ul><ul><ul><li>C. Pollen fertilizes egg cell- to make a baby plant embryo </li></ul></ul><ul><ul><li>D. Other pollen develops into food (cotyledon) for embryo </li></ul></ul>
  10. 22. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>8. Seed </li></ul><ul><ul><li>Made up of embryo, cotyledon, coat </li></ul></ul>
  11. 23. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>9. Pollination </li></ul><ul><ul><li>A. Self-pollination- gravity pulls pollen down from stamen to pistil </li></ul></ul><ul><ul><li>B. Wind </li></ul></ul><ul><ul><li>C. Insects- pollen sticks to them and travels with them to a new flower </li></ul></ul>
  12. 25. Plants: Sexual Reproduction <ul><li>Sexual Reproduction in Plants </li></ul><ul><li>“ Oh Say Can You Seed” Book by Dr. Seuss </li></ul>
  13. 26. Plants: Asexual Reproduction “Vegetative Propagation” <ul><li>Asexual Reproduction in Plants </li></ul><ul><li>1. Runners- plant grows from an extension of a root or stem </li></ul><ul><ul><li>Ex: ivy </li></ul></ul>
  14. 27. Plants: Asexual Reproduction “Vegetative Propagation” <ul><li>Asexual Reproduction in Plants </li></ul><ul><li>2. Cuttings- use leaf or stem cut from plant to grow a new one </li></ul>
  15. 28. Plants: Asexual Reproduction “Vegetative Propagation” <ul><li>Asexual Reproduction in Plants </li></ul><ul><li>3. Grafting- transplant a cutting onto a different plant </li></ul><ul><ul><li>Ex: apple trees </li></ul></ul>
  16. 29. Plants: Asexual Reproduction “Vegetative Propagation” <ul><li>Asexual Reproduction in Plants </li></ul><ul><li>4. Bulbs & Tubers- fat stems/roots that grown new plants underground </li></ul><ul><ul><li>Ex: onion, potatoes </li></ul></ul>
  17. 30. Plants: Asexual Reproduction “Vegetative Propagation” <ul><li>Asexual Reproduction in Plants </li></ul><ul><li>5. Spores- small round reproductive cells underneath fern leaf (drop to ground) </li></ul>
  18. 31. Assessment: Plant Reproduction <ul><li>Compare and contrast sexual and asexual plant reproduction </li></ul>
  19. 32. Assessment: Plant Reproduction <ul><li>Distinguish between the roles of the “female” and “male” plant organs in sexual reproduction </li></ul>
  20. 33. Assessment: Plant Reproduction <ul><li>Describe the fertilization process in a flower </li></ul><ul><li>Pollen lands on top, grows down into ovule and fertilizes it, producing an egg cell and endosperm (seed)‏ </li></ul>
  21. 34. Assessment: Plant Reproduction <ul><li>List the ways in which flowers become fertilized /pollinated </li></ul>
  22. 35. Assessment: Plant Reproduction <ul><li>Distinguish between the various forms of vegetative propagation in plants </li></ul>
  23. 36. Assessment: Plant & Animal Reproduction <ul><li>Compare the gametes involved in sexual reproduction in plants vs. animals </li></ul>
  24. 37. Hand-On: Studying a Plant <ul><li>Complete the flower dissection lab </li></ul>
  25. 38. Plant Reproduction Websites <ul><li>Plants in Motion </li></ul><ul><li>Tree of Life: Plants </li></ul><ul><li>Plant Investigations </li></ul><ul><li>The Great Plant Escape </li></ul>

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