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PLANT VARIETY-EPIPHYTIC AND PARASITIC PLANTS.

EPIPHYTIC  AND  PARASITIC PLANTS  GROW  ON  OTHER LIVING  PLANTS.Typically  , epiphytic   plants  are  not  rooted  in  the  soil , instead  ,  they  live  above the  ground   level  on  the  stems  and  branches  of  other plants.Epiphytes    obtain  water  from  trapped  rain  water   and  from  moisture  in  the  air ,  and  minerals  from  organic  matter  that  has  accumulated on  the  surface   of  the plant  on which   they  are  growing .Like  other  green   plants ,  epiphytes  produce  their  food   by  photosynthesis.
Epiphytes  include  tropical  orchids    and  bromeliads (air  plants), and  some   mosses   that  lived  in  temperate   regions.
Parasitic   plants  obtain    all  their  nutrients  requirements  from  the  host  plant   on  which  they  grow .The  parasites   produce  haustoria , root  like  organs    that  penetrate  the   stem  or  roots  of   the  host  and  grow  inwards  to   merge  with  the  host's   vascular  tissue  ,  from   which  the   parasite  extracts  water,minerals , and  manufactured   nutrients .
As  they   have  no  need   to  produce  their  own  food , parasites   plants  lack  chlorophyll,  the  green  photosynthesis  pigment ,  and  they   have  no  foliage  leaves .Partial    parasitic  plants (e.g  mistletoe) obtain  water   and  minerals   from  the  host  plant   but have   green  leaves   and  stems  and  are   therefore   able  to  produce  their  own   food   by  photosynthesis.

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