ROOTS 



35 



hi 



Region 

 of 



Root 

 Hairs 



-I Epidermis 

 Spiral Vessel 

 j^Central Pitted 

 Vessel 



Growing 

 Point 1 



Boot 



Annular 

 Vessel 

 Root Hair 



iff 



r 



- lEndodetmia 



Cortical 

 EiParenchyina 



ir'-Pericycb 



Procambiuni 



Fig. 10. Longitudinal section of the root of barley {Hordeum sativum). (Re- 

 printed by permission from Holman and Robbins' Elements of Botany, John Wiley and 

 Sons, 1938.) 



