ECOLOGY OF SHOOT AND ROOT 2O5 



30. In the ten plants selected, what is the exact mor- 



phology and probable ecology of the specialized 

 structures they show ? 



In each case your record should bring out clearly 

 (in the drawings when possible) : - 



(a) The evidence which proves their mor- 

 phology. 



($) Reasons for your view of their ecology. 

 It will aid in the interpretation of doubtful struc- 

 tures if you will recall the parts or members 

 a typical Mesophyte possesses. The drawings 

 need not include the entire plants, but only the 

 special structures and their connection with 

 other parts. 



31. In a sentence explain the idea you attach to the 



word "morphology"; also to " ecology"; and 

 the exact relationship between them. 



Materials. Living plants from a greenhouse are used, or 

 specimens from the structural herbarium (see page 106, invalu- 

 able for this work when living materials are not available) or 

 from the museum, showing highly specialized parts, -- spines, 

 tendrils, pitchers, tubers, etc. A good list of such plants is 

 given in Gray's " Structural Botany," Chapter III. 



If at the right season, many plants of the native flora are 

 obtainable for this exercise. 



Much use can well be made here of good figures, such, 

 particularly, as those in Kerner and Oliver's " Natural History 

 of Plants," and in Schimper's " Pflanzengeographie." 



