144 MORPHOLOGY AND LIFE HISTORY 



in the morning. Study a spore-print of this species, 

 describe it fully, and state how it was formed. 



5. Make accurate drawings showing all features ob- 

 served under E, 2 and 3. 



6. Sexual reproduction is unknown among the Agari- 

 cales. 



7. Diagram the life history of the species studied. 



F. Nutrition and Growth: 



1. Could the mushroom exist independently of other 

 plants? Consider this question thoughtfully and 

 answer as fully as possible in a well-worded para- 

 graph. 



2. Suggest an explanation for the rapid growth of 

 mushrooms. 



G. General Questions: 



1. State whether there is a division of physiological 

 labor in this plant, and, if so, to what extent. 



2. In what ways may this plant become widely 

 distributed? 



3. State, with reasons, whether you consider the mush- 

 room a more or less highly developed plant than 

 (a) Spirogyra; (b) Polypodium. 



