316 GRASSES AND LEGUMES 



4. Why is seed production so important? 



5. If a grass is a shy seed producer, what compensating qualities must it 



have? 



6. Give the origin of cultivated grasses. 



7. Compare the improvement of grasses and cereals. 



8. Name some natural groups of grasses. 



9. Give the character and distribution of grass roots. Roots in old sod. 



10. Clearly define difference between bunch and sod grasses. 



11. Define stolons. Rhizomes. 



12. To what uses are the types qualified? 



13. Does close mowing ever change character of growth? 



14. How is timothy classed? 



15. Name the principal bunch grasses. Sod grasses. 



16. What is palatability ? How is it determined? 



17. Distinguish between the quality of young grass and full-grown grass. 



18. Name some grasses that retain quality when well grown. 



19. Is this important in a hay grass? In a pasture grass? 



20. Name some grasses that decrease in quality. 



21. Why is timothy so popular as a hay grass? 



22. Why are grasses often grown on rather extreme types of soil, as very 



wet or very dry? 



23. Why do we say that certain grasses are " tolerant" of wet or dry soil? 



24. Name some grasses tolerant to wet soil. To dry soil. 



25. What is meant by a wide or narrow range of adaptation ? 



26. Name plants tolerant to acid soil. 



27. Name those requiring soils high in lime. 



28. How long may we expect timothy to live ? 



29. What factors affect length of life in grasses? 



30. Name some forage plants that come to full growtli quickly. 



31. Some that develop slowly. 



32. Name some bi-annual plants. 



33. Name some long-lived plants. 



34. Name some permanent plants. 



35. What is meant by permanent? 



36. Give the general character of permanent grasses. 



37. Is white clover long-lived? 



