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Why do many flowers have a sweet scent?


The sweet scent of flowers is designed to attract insects who seek food in the shape of pollen and the fragrant smelling nectar is a solution of sugars produced in little sacs called nectaries at the base of the flower  petal .
Why do many flowers have a sweet scent?
The insects have a part in the process of fertilization. Almost all plants perpentuate themselves by means of sexual reproduction, during which a male reproductive cell or sperm fuses with the female reproductive cell or egg. 

When bees or other insects visit flowers in search of the sweet- smelling nectar, parts of their hairy bodies become dusted with pollen which  contains the male reproductive cells. This rubs off on the flower ‘s  carpels  which contains the egg or ovule.

Insects seem to be strongly attracted by sweet scents. In fact , some flowers, such as the Meadow Sweet , are so highly scented that insects  are attracted to them although they have no nectar to offer. Most insect –pollinated flowers have evolved wonderful devices for guiding the movements of the insects. In this way they ensure that pollen is dusted over the insects body.        

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