EXERCISE PAGE 



28. What Use may the Plant make of Food Materials, such as Starch? 32 



29. How may Insoluble Foods, as Starch, be moved from Place to 



Place in the Plant? 33 



30. Digestion of Starch 34 



31. What Provisions are made Annually for Next Year's Growth of 



Branches ? Food Storage 36 



32. Preparation for New Growth in the Structure of the Bud ... 37 



III. PROVISION FOR GROWTH 



33. The Opening of a Bud 39 



34. The History of the Growth of a Branch 40 



35. Some Examples of Extensive Storage of Foods 42 



36. The Use made of Stored Food 44 



37. How does the Amount of Available Stored Food affect Growth ? . 45 



38. Field Study of Food Storage 47 



IV. REPRODUCTION AND PROPAGATION 



39. Vegetative Reproduction by Stolons and Runners 48 



40. Reproduction from Leaves 49 



41. Reproduction from Roots 50 



42. Propagation by Roots 51 



43. Propagation by Softwood Cuttings 52 



44. Cleft Grafting 53 



45. Budding 55 



46. The Parts of a Flower 57 



47. How are Seeds and Fruit formed from the Pistil ? 59 



48. How is Pollen carried from Stamen to Stigma ? 60 



49. Prevention of Self-pollination by Dichogamy 62 



50. Prevention of Loss of Pollen 63 



51. Can Pollen be distributed by Wind ? 64 



V. SEED DISPERSAL 



52. Advantages from Dispersal of Seeds 65 



53. What Advantages are possessed by Plants having Winged Seeds 



or Fruits ? 66 



54. What Advantages are possessed by Plants having Plumed Seeds 



or Fruits ? 68 



55. What Advantage in possessing Burs or Stickers ? 69 



56. Dispersal of Seeds of Fleshy Fruits . 71 



