Plate III. 



PROGRESSIVE DEVELOPMENT. 



15 



What is the structure of the plants in figs. 1, 6 and 2. What does fig. 1 re- 

 present ? fig. 6 ? fig. 2 ? Describe each. What change in figs. 3, 4, 5 f De- 

 scribe fig. 7. What kind of leaf at figs. 8, 9, 13, 15? Name of the stalk in fig. 12. 

 Describe the figures, and define its other parts. Describe fig. 13. What kind 

 if apparatus in figs. 16, 17, 19. Describe each. Describe figs. 14, 15, 20. What 



is the hood called ? Define other parts. Explain fig. 11. What figures repre- 

 sent Unicellular plants ? What the order Fungi ? Algae ? Ltchenes ? Hepat- 

 i cte ? Musci ? Filices ? What kind of plants in each ? How many of these, 

 and what, devolope woody fibre ? What ones are completely cellular ? 



