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PARTS OF THE PLANTS

ROOTS  ARE  THE  UNDERGROUND    PART  OF   PLANTS.They  have   three   main  functions .Firs t,they  anchor  the  plant  in  the  soil.Second , they  absorb   water   and   minerals   from  the  space  between   soil  particles ;the  roots'   absorptive   properties  are  increased  by   root  hair ,which  grows   behind  the  root  tips , allowing  maximum  uptake  of  vital   substances .Third , the  root  is  the  part  of  the plant's   transport   system :xylem  carries   water  and  minerals   from  the   root    to  the  stem  and  leaves,and  phloem   carries  nutrients   from  the  leaves  to  all parts  of  the root  system.In  addition , some  roots (e.g carrots)are  food   stores.Roots  have  an  outer  epidermis   covering  a  cortex  of parenchyma(packing tissue )  and  a central  cylinder  of  vascular  tissue .This  arrangement   helps  the  roots   resist  the force  of  compression  as   they  grow  through  the  soil.

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