wind pollinated
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Are bright in colour Produce sugary nectar Are large in size Have a scent
They don't need to be. Color is one method used by insect pollinated plants to attract the insects. Wind pollinated plants such as Grasses and Pine trees don't need to attract pollinators. The male flowers simply release the pollen on to the breeze on a "hit or miss" basis.
Insect pollinated is attractive and colourful, the former isn't Besides petal color the insect pollinated flowers also have insect attracting smell where as in wind pollinated flowers the petals are neither attractive nor scented.
Because they are normally pollinated by moths or bats and have no need to be coloured - they normally have a strong scent to attract pollinators
You can easily know whether flowers are wind pollinated by just looking at their structure. These flowers have very small petal and they do not have any scent or nectar to attract insects. The pollen is also produced in large quantities since most of it never gets to the other flowers.
Wind-pollinated plants do not need colorful flowers as they are not pollinated by animals, insects or birds. Since wind-pollinated plants do not need colorful flowers, they might as well put their energy into making their pollen lighter, or more of it.
Different flowers use different methods of attracting pollinators. Some use scent others use colour depending on what type of insect they are trying to attract.
To attract the insects by color and smell
Because they are pollinated by wind.
The colour and scent
Most flowers with a scent are used in perfume.
The scent of Jasmine is emmited mostly at night, indicating that the flower evolved to be moth pollinated.