Question

Why are flower generally so colourful and fragrant ? If flower are not so colourful and sweet smeling will fruit formation be seen in these plant?

Answer 1

flowers are colourful dur to the presence of chromoplast which gives colours to the flower if there is no sweet smeling then there will be no honey bees and insects so no pollination
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Answer 2

hey student,

the purpose of flowers generally being colourful and fragrant is to attract insects which will help them in transporting their pollens from one flower to another for producing their next generation...........even if these functions are not there ,there is as chance for transportaion of these pollens through wind water and other medium

hope it helped.................