Why flowers smell? what's the reason?

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SUMMARY

Flowers produce scent primarily to attract insects for pollination. The fragrance is generated in the petals, specifically within epidermal cells that synthesize essential oils. Each flower's scent is chemically intricate; for instance, the clove scent of pinks consists of approximately 60 different chemicals. Understanding these mechanisms highlights the evolutionary adaptations of flowering plants.

PREREQUISITES
  • Basic knowledge of plant biology
  • Understanding of essential oils and their properties
  • Familiarity with pollination processes
  • Knowledge of chemical composition and analysis
NEXT STEPS
  • Research the role of essential oils in plant biology
  • Explore the chemical composition of various flower scents
  • Investigate the relationship between flower scent and pollinator behavior
  • Learn about the evolutionary advantages of floral fragrances
USEFUL FOR

Botanists, horticulturists, ecologists, and anyone interested in the interactions between plants and pollinators will benefit from this discussion.

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why some of them smell? what's the reason?
 
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En_lizard said:
why some of them smell? what's the reason?
To attract insects, for pollination.
 
I mean how? what cause the smell?
 
Cause of the fragrance in flowers...

Scent in flowers is most usually produced in the petals. On the petals’ surface is a layer of cells, called epidermal cells. In these cells various types of fragrant oil are made, commonly known as 'essential oils'. The scent of each flower is chemically quite complex: for example, the clove scent of pinks is made up of about 60 different chemicals.
excerpt from http://www.millsfarmplants.co.uk/Scented_plants.htm
 
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