CH. II] 



General Biology 



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Fig. 23 



Fig. 22. Germinating Maize, natural size. A. Early stage, after three days 

 growth. B. The same after five days growth. C, coleorhiza. R, primary 

 root. In B the first adventitious roots are shown arising from the primary 

 node. 



Fig. 23. Young plant of Zea mais. nat. size. s. seminal root; ad. adventitious 

 roots arising from the lowest node; t. rhizomatous stem; sk. first sheathing 

 leaf; gr. shrivelled grain. 



22 



