QUESTIONS 233 



7. Make a listl of agricultural plants wliitli are of American origin. 

 Tell something about their present range and uses. 



8. Give an example of symbiosis. 

 "J. Tell how legumes improve soils. 



10. Describe the propagation of the apple by root grafting. 



11. Describe the budding of peaches and plums. 



12. How and when are stocks and scions grown, gathered, stored, 

 and used ? 



13. What are some of the pollination problems with strawberries? 



14. Mention the different types of cabbages; of turnips. 



15. Describe the peculiar seed-bearing liabits of the peanut plant. 



