DIFFERENCE IN PLANTS 217 



time of maturity, color of foliage and flowers, productive- 

 ness, size of leaves and flowers, longevity. 



Review. — Contrast physical and organic environments. How are 

 plants modified by climate? Define acclimatization. Explain how time 

 of maturity is influenced by climate. Explain how climate influences 

 stature. How do winds affect plants? How are plants influenced by 

 soil? By soil moisture? Exposure? 



Observe two or three plants of any one kind on your way to school, 

 and note how they differ from each other in size, form, branching, 

 color, earliness or lateness, productiveness and other characters: are 

 you able to correlate these differences with the conditions in which 

 the plants grow? 



