48 THE SEED AND ITS NEEDS 



5. What is gained by the soaking of a seed? 



6. What results when seed are kept permanently wet? 



7. Why is oxygen necessary for the germination of a seed? 



8. Why must the soil be aerated for good plant growth? 



9. Give two ways in which qxygen can be secured for the seed. 



10. What three temperatures are recognized in the germination of seed? 



11. What are the five processes of germination? 



12. Name the internal conditions affecting germination. 



13. What is meant by maturity of a seed? 



14. Discuss two ways a seed may be unsound. 



15. Is germinative energy important to the seed? 



16. What are hard seeds? How is the defect remedied? 



17. What is seed testing and of what value is it to the grower? 



18. Describe four kinds of seed testers? 



19. What type of soil is preferred for the seed bed? 



20. What determines the depth to which seed should be planted? 



21. Discuss the compacting of the soil about the seed. 



22. What determines the proper time to plant seeds? 



23. Why is it necessary to thin plants? 



24. What is a seed bed, and why is it important to have it well prepared? 



25. What two methods are used in sowing of seed? 



26. Why does shade assist the seedling to start growth? 



27. Discuss the watering of seedlings. 



28. Discuss transplanting of seedlings. 



