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POLLINATION

POLLINATION  IS  THE  TRANSFER  OF    POLLEN (which  contains   the  male  sex  cells) from   an  anther (part  of  male  reproductive organ).This   process   precedes   fertilization . .Pollination   may  occur   within  the  same   flower  (self  pollination), or  between  flowers    of  separate  plants  of   same   species (cross- pollination).In  most   plants ,  pollination  is  carried   out  either     by  insects or  by  the  wind .Less commonly  ,birds,bats,or  water  are  the  agents  of  pollination .
Insect  -pollinated   flowers  are  typically   brightly  coloured , scented , and  produce  nectar , on   which  insect  feed .Such  flowers  also  lend  to  have  patterns that   are  visible  only  in  ultraviolet  light,  which  many  insect  can  see    but  humans  cannot.These   features   attract  insects  , which  become  covered   with  the  sticky  or  hooked  pollen  grains .When  they   visit   one   flower, and   transfer   the  pollen  to  the   next  flower  they  visit.
Wind - pollinated  flowers   are  generally  small, relatively  inconspicuous  ,   and  unscented .They    produce  large  quantities  of  light  pollen  grains  that  are  easily  blown  by  the  wind   to  other  flowers.


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