Reproduction in Plants and Animals

1. Reproduction in Plants and Animals BY: BRIANNA SHIELDS May 7, 2005

2. GET YOUR HOMEWORK OUT ON YOUR DESK • Clear everything else off your desk, except for a pencil • 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) • Each student should get a plant worksheet off the front counter • Wait quietly for further instructions

3. 1. Throw out the plant parts and sheet of blank paper • 2. Put the textbook back on the front table • 3. Have only the three note worksheets and a writing utensil out on your desk • 4. Sit quietly and wait for instructions

4. Sexual Reproduction in Plants 1. Flower = reproductive organ, makes gametes (sperm and egg) 2. Seed= Pollen (male) + egg cell (female) = baby plant Plants: Sexual Reproduction

5. Sexual Reproduction in Plants 3. Male organ = Stamen makes pollen (sperm cells) Plants: Sexual Reproduction

8. Sexual Reproduction in Plants 4. Female Organ = Pistil-(center) Ovary- at bottom Fertilization Plants: Sexual Reproduction

15. Sexual Reproduction in Plants 5. Perfect flower = Has a pistil and a stamen 6. Imperfect flower= Has just a pistil or just a stamen Plants: Sexual Reproduction

17. Makes only pollen Imperfect- with stamen Makes both pollen and eggs Perfect The only self-pollinator Perfect Cannot pollinate any flower Imperfect with pistil In which plants can fertilization take place? Perfect and imperfect with pistil Comparing Perfect & Imperfect Flowers

18. Sexual Reproduction in Plants 7. Fertilization A. Pollination- pollen transferred from stamen to pistil (wind, animal (bee), gravity) B. 2 Pollen grow down into pistil’s ovary C. Pollen fertilizes egg cell- to make a baby plant embryo D. Other pollen develops into food (cotyledon) for embryo Plants: Sexual ReproductionIllustrate this process in your notes

22. Sexual Reproduction in Plants 8. Seed Made up of embryo, cotyledon, coat Plants: Sexual Reproduction

23. Sexual Reproduction in Plants 9. Pollination A. Self-pollination- gravity pulls pollen down from stamen to pistil B. Wind C. Insects- pollen sticks to them and travels with them to a new flower Plants: Sexual Reproduction

25. Sexual Reproduction in Plants “Oh Say Can You Seed” Book by Dr. Seuss Plants: Sexual Reproduction

26. Asexual Reproduction in Plants 1. Runners- plant grows from an extension of a root or stem Ex: ivy Plants: Asexual Reproduction“Vegetative Propagation”

27. Asexual Reproduction in Plants 2. Cuttings- use leaf or stem cut from plant to grow a new one Plants: Asexual Reproduction“Vegetative Propagation”

28. Asexual Reproduction in Plants 3. Grafting- transplant a cutting onto a different plant Ex: apple trees Plants: Asexual Reproduction“Vegetative Propagation”

29. Asexual Reproduction in Plants 4. Bulbs & Tubers- fat stems/roots that grown new plants underground Ex: onion, potatoes Plants: Asexual Reproduction“Vegetative Propagation”

30. Asexual Reproduction in Plants 5. Spores- small round reproductive cells underneath fern leaf (drop to ground) Plants: Asexual Reproduction“Vegetative Propagation”

31. Compare and contrast sexual and asexual plant reproduction Assessment: Plant Reproduction

32. Distinguish between the roles of the “female” and “male” plant organs in sexual reproduction Assessment: Plant Reproduction

33. Describe the fertilization process in a flower Pollen lands on top, grows down into ovule and fertilizes it, producing an egg cell and endosperm (seed) Assessment: Plant Reproduction

34. List the ways in which flowers become fertilized /pollinated Assessment: Plant Reproduction

35. Distinguish between the various forms of vegetative propagation in plants Assessment: Plant Reproduction

36. Compare the gametes involved in sexual reproduction in plants vs. animals Assessment: Plant & Animal Reproduction

37. Hand-On: Studying a Plant • Complete the flower dissection lab

38. Plant Reproduction Websites • Plants in Motion • Tree of Life: Plants • Plant Investigations • The Great Plant Escape