PHYSIOLOGICAL PROCESSES IN PLANTS 103 



2. AGAINST CHANGES IN TEMPERATURE 



Tabulate in the above table examples of leaves that protect them- 

 selves as indicated at the heads of the columns. Sum up in a paragraph 

 the information thus tabulated. 



e. Some Leaf Modifications (Optional) 



Fill in the above table with as many examples as you can, as a piece 

 of home work. 



f. Importance to Man 



123 4 5 6 



Tell just how leaves are of value to man under topics 4, 5, and 6, 

 Tell what leaves are of value in the remaining columns. 



