11. 
12. 
18. 
14. 
15. 
AN ANGIOSPERM IN FLOWER. 65 
Are the flowers and floral parts arranged to favor 
self- or cross-pollenation ? 
If the latter, what special devices are there to favor 
cross-pollenation ? 
What is the agent of pollenation ? 
What is the form and structure of the fruit? Why? 
. How are the seeds disseminated? If there is a 
special device for this, explain fully. 
Ask yourself the meaning of everything, and espe- 
cially as to why plants vary so much, and how 
the variations aid the plant in its struggle for 
existence. 
Why is this plant scattered over a greater or less 
range than plants previously studied ? 
What is the relation of the plant to the animals 
found in the same locality? 
Is the plant or any of its parts useful to man? 
How ? 
Is the plant or any of its parts harmful to man? 
How? 
Note.—In a similar way study numerous other 
plants. 
