DIVISION II. 



THE PHYSIOLOGICAL PROCESSES OF PLANTS. 



THE physiological processes of plants are many, diverse, 

 and complexly interconnected. Yet for purposes of study they 

 must be separated and classified, and a convenient grouping, 

 partly natural and partly artificial, is the following: 



Section i. The processes of NUTRITION, including all 

 those concerned with maintenance of the life of the individual, 

 involving the absorption, transformation, and release of matter 

 and of energy. 



Section 2. The processes of INCREASE, including all 

 those concerned with expansion both in size and number. 



Section 3. The processes of ADJUSTMENT, including 

 all those concerned with adjustment to the conditions under which 

 the plant must live. 



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