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18   I d e n t i f y   t h e   c o r r e c t   o r d e r   ( r o o t s )   f r o m   b a s e   t o   r o o t   a p e x . I . M i n e r a l   a b s o r p t i o n   z o n e . I I .   S o i l   p e n e t r a t i o n   z o n e . I I I .   C e l l   n u m b e r   i n c r e a s e m e n t   z o n e . I V .   C e l l   e l o n g a t i o n   z o n e . a ) I I , I , I V , I I I b )   I , I I , I I I , I V c ) I V , I I I , I I , I d ) I I I , I V , I , I I
 

Dear student,    
​Please find below the solution to the asked query                                                                   

Correct order (roots) from base to root apex is:
  • Soil penetration zone
  • Mineral absorption zone
  • Cell number increasement zone
  • Zone of elongation
Hence, option (a) is correct. 

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answer is (a)
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