NATURE OF PLANTS 



FIG. 34. Portion of the formative region of the root taken at a in Fig. 

 33 ; r, root cap ; v, cells which by repeated division add new cells to end 

 of root and to inside of root cap. Note the numerous dividing cells and 

 their uniformity in size. I. D. Cardiff. 







FIG. 35. Portion of the region of elongation of the root taken at b in 

 Fig. 33. Note the larger size of the cells, increase in cell sap as indicated 

 by the larger vacuoles and absence of cell division; e, epidermis; c, cortical 

 region; p, central region. I. D. Cardiff. 



