VARIOUS WATS OF GROWING PLANTS 81 



of making new plants, but they are all that we need to 

 know. Working at school or at home, in summer or in 

 winter, we can in these ways make certain kinds of new 

 plants more quickly and surely than by sowing seed. 



Review Questions 



1. What is root division? 



2. What are tubers ? How do they produce plants ? 



3. How do bulbs increase their numbers? 



4. What is layering ? Tip-layering ? 



5. What are soft cuttings, and how can they be made to strike 

 root? 



6. What are hardwood cuttings, and how should they be handled ? 



7. What are root cuttings? How would you plant them? 



