=== පරාගන යාන්ත්රණය ===
The pollination mechanism employed by a plant depends on what method of pollination is utilized.
Most flowers can be divided between two broad groups of pollination methods:
''Entomophilous'': flowers attract and use insects, bats, birds or other animals to transfer pollen from one flower to the next. Often they are specialized in shape and have an arrangement of the stamens that ensures that pollen grains are transferred to the bodies of the pollinator when it lands in search of its attractant (such as nectar, pollen, or a mate). In pursuing this attractant from many flowers of the same species, the pollinator transfers pollen to the stigmas—arranged with equally pointed precision—of all of the flowers it visits. Many flowers rely on simple proximity between flower parts to ensure pollination. Others, such as the ''[[Sarracenia#Flowers|Sarracenia]]'' or [[Lady's Slipper|lady-slipper orchids]], have elaborate designs to ensure pollination while preventing [[self-pollination]].
[[ගොනුව:Grass Anthers.JPG|left|thumb|Anthers detached from a Meadow Foxtail flower.]]
[[ගොනුව:Flowering Grass.JPG|right|thumb|A grass flower head ([[Meadow Foxtail]]) showing the plain coloured flowers with large anthers.]]
''Anemophilous'': flowers use the wind to move pollen from one flower to the next, examples include the [[Poaceae|grasses]], Birch trees, Ragweed and Maples. They have no need to attract pollinators and therefore tend not to be "showy" flowers. Whereas the pollen of entomophilous flowers tends to be large-grained, sticky, and rich in [[protein]] (another "reward" for pollinators), anemophilous flower pollen is usually small-grained, very light, and of little nutritional value to [[insect]]s, though it may still be gathered in times of dearth. Honeybees and bumblebees actively gather anemophilous corn ([[maize]]) pollen, though it is of little value to them.
Some flowers are self pollinated and use flowers that never open or are self pollinated before the flowers open, these flowers are called cleistogamous. Many Viola species and some Salvia have these types of flowers.
<!--Not sure where to stick this info from the old article yet.
There is much confusion about the role of flowers in allergies. For example the showy and entomophilous [[goldenrod]] (''Solidago'') is frequently blamed for [[hay fever|respiratory allergies]], of which it is innocent, since its pollen cannot be airborne. Instead the [[allergen]] is usually the pollen of the contemporary bloom of anemophilous [[ragweed]] (''Ambrosia''), which can drift for many kilometers.-->
=== Flower-pollinator relationships ===
Many flowers have close relationships with one or a few specific pollinating organisms. Many flowers, for example, attract only one specific species of insect, and therefore rely on that insect for successful reproduction. This close relationship is often given as an example of [[coevolution]], as the flower and pollinator are thought to have developed together over a long period of time to match each other's needs.
This close relationship compounds the negative effects of [[extinction]]. The extinction of either member in such a relationship would mean almost certain extinction of the other member as well. Some [[endangered species|endangered plant species]] are so because of [[pollinator decline|shrinking pollinator populations]].
== Fertilization and dispersal ==