THE ROOT ‘ 159 
Sos 
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Elongation «= = HI nated 
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sce iNRaL nada 
ig < YY 
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Bnirynie (RTA 
Region Nirestrailente raven o 
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= Nyueezeeeziea 
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Beat SERA 
L WS : 
NWA 
a Yio. 94,—Lengthwise section of a root tip (diagrammatic), showing its various 
“regions. (From “A Textbook of General Botany’? by Smith, Overton et al., Macmillan 
Co., Publishers.) Rie! 
