130 POPULAR FRUIT GROWING. 



6. What are runners? suckers? thorns? prickles? 



7. Of what use is the bark? 



8. What is it made up of? 



9. How do these parts vary in different plants? 



10. What are the buds? 



11. What are adventitious buds? 



12. What are the characteristics of the leaf? flower? bud? 



13. How are fruit buds formed? 



14. What is meant by girdling? 



15. How is it accomplished? 



16. What are leaves made up of? 



17. How are they constructed? 



18. What functions do the leaves perform for the plant? 



19. What functions do the flowers perform for the plant? 



20. What are the different parts of the flower? 



21. How is each constructed and for what purpose? 



22. What is a fruit as defined by botanists? by horticultur- 

 ists? 



23. How is it constructed? 



24. What is pollen? 



25. What are its characteristics? 



26. How are plants crossed? 



27. What is meant by the term "hybrid?" 



28. How are flowers pollinated? 



29. To what extent do fruit plants come true from seed? 



30. What is the cause of this? 



31. What local varieties come true from seed? 



32. What course of growth does the plant take throughout 

 the year? 



33. What Is meant by the process of assimilation? 



34. How Is it carried on in plants? 



35. What is the result of removing foliage from a plant? 



36. What is meant by transpiration? 



37. What approximate amounts are transpired from the 

 leaves of deciduous trees? 



38. What minerals are taken up from the ground by plants? 



39. How is it returned to the soil? 



40. What is the need of a rest period for plants? 



41. How should they be cared for during this period? 



42. How may commercial fruits be grouped? 



43. What is the most convenient way of classing fruits? 



44. What is a variety? 



