Wind Pollination
| Wind Pollinated | | small petals, often brown or dull green - no need to attract insects | | no scent - no need to attract insects | | no nectar - no need to attract insects | | pollen produced in great quantities - because most does not reach another flower | | pollen very light and smooth - so it can be blown in the wind and stops it clumping together | | anthers loosely attached and dangle out - to release pollen into the wind | | stigma hangs outside the flower - to catch the drifting pollen | | stigma feathery or net |
eg : pine , weed , oryza sativa , green grasses, Rosaceae
When pollen is transported by wind, this is called anemophily. Many of the world's most important crop plants are wind-pollinated. These include wheat, rice, corn, rye, barley, and oats. Many economically important trees are also wind-pollinated. These include pines, spruces, firs and many hardwood trees, including several species cultivated for nut production.
Wind-pollinated plants do not invest in resources that attract pollinating organisms, such as showy flowers, nectar, and scent. Instead, they produce larger quantities of light, dry pollen from small, plain flowers that can be carried on the wind. Female structures on wind pollinated plants are adapted to capture the passing pollen from the air, but the majority of the pollen goes to waste.
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Wind pollinated plants often have inconspicuous single sexed flowers on separateplants as seen with the dioecous willow and holly to prevent self pollination. Other plants like oaks & birches and many conifers have small plain male flowers/cones and female flowers/cones on the same plant but still rely on wind to provide cross pollination.
1 single sex flowers
2 Small light weight and copious quantities of pollen. Wind pollination prevents inbreeding (selfing) and promotes broad dispersal of pollen between plants and relievespollen limitation.
3 Reduced perianth making the flower
eg : pine , weed , oryza sativa , green grasses, Rosaceae
When pollen is transported by wind, this is called anemophily. Many of the world's most important crop plants are wind-pollinated. These include wheat, rice, corn, rye, barley, and oats. Many economically important trees are also wind-pollinated. These include pines, spruces, firs and many hardwood trees, including several species cultivated for nut production.
Wind-pollinated plants do not invest in resources that attract pollinating organisms, such as showy flowers, nectar, and scent. Instead, they produce larger quantities of light, dry pollen from small, plain flowers that can be carried on the wind. Female structures on wind pollinated plants are adapted to capture the passing pollen from the air, but the majority of the pollen goes to waste.
\
Wind pollinated plants often have inconspicuous single sexed flowers on separateplants as seen with the dioecous willow and holly to prevent self pollination. Other plants like oaks & birches and many conifers have small plain male flowers/cones and female flowers/cones on the same plant but still rely on wind to provide cross pollination.
1 single sex flowers
2 Small light weight and copious quantities of pollen. Wind pollination prevents inbreeding (selfing) and promotes broad dispersal of pollen between plants and relievespollen limitation.
3 Reduced perianth making the flower