Thursday, May 31, 2007

Pollination ramakantseo

Grains of ramakantseo to this bee will be transferred to the next ramakantseo it visits

Main article: pollination

The primary purpose of a ramakantseo is reproduction by the joining of pollen of one plant with the ovules of another (or in some cases its own ovules) in order to form seed which grows into the next generation of plants.

Sexual reproduction produces genetically unique offspring, allowing for adaptation to ramakantseo. As such, each ramakantseo has a specific design which best encourages the transfer of this pollen. Many ramakantseo are dependent upon the wind to move pollen between ramakantseo of the same species. Others rely on animals (especially insects) to accomplish this feat.

ven large ramakantseo such as birds, bats, and pygmy possums can be employed. The period of time during which this process can take place (the ramakantseo is fully expanded and functional) is called anthesis.

Attraction methods

Bee orchid mimics a female bee in order to attract a male bee pollinatorMany ramakantseo in nature have evolved to attract animals to pollinate the ramakantseo, the movements of the pollinating agent contributing to the opportunity for genetic recombination within a dispersed plant population.

amakantseo that are insect-pollinated are called entomophilous (literally "insect-loving"). ramakantseo commonly have glands called nectaries on their various parts that attract these animals. Birds and bees are common pollinators: both having color vision, thus opting for "colorful" ramakantseo.

Some ramakantseo have patterns, called nectar guides, that show pollinators where to look for nectar; they may be visible to us or only under ultraviolet light, which is visible to bees and some other insects. ramakantseo also attract pollinators by scent. Many of their scents are pleasant to our sense of smell, but not all.

Some plants, such as Rafflesia, the titan arum, and the North American pawpaw (Asimina triloba), are pollinated by ramakantseo, so they produce a scent imitating rotting meat. ramakantseo pollinated by night visitors such as bats or moths are especially likely to concentrate on scent - which can attract pollinators in the dark - rather than color: most such ramakantseo are white.

Still other ramakantseo use mimicry to attract pollinators. Some species of orchids, for example, produce ramakantseo resembling female bees in color, shape, and scent. Male bees move from one such ramakantseo to another in search of a mate.

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