Tuesday, May 18, 2010

2 mechanisms of pollen transfer and adaptations to facilitate ech mechanism?

Anemophily or wind pollination is a form of pollination whereby pollen is distributed by wind. Unlike entomophilous and zoophilous species, whose pollen is spread by insects and vertebrates respectively, anemophilous species do not develop scented flowers, nor do they produce nectar.





Entomophily is when pollen is distributed by insects, particularly bees, Lepidoptera (e.g. butterflies and moths), flies and beetles. Entomophilous species frequently evolve mechanisms to make themselves more appealing to insects, e.g. brightly colored or scented flowers, nectar, or appealing shapes and patterns. Pollen grains of entomophilous plants are generally larger than the fine pollens of anemophilous (wind pollinated) plants. They usually are of more nutritional value to insects, who may use them for food and inadvertently spread them to other flowers.





Zoophily is a form of pollination whereby pollen is transferred by vertebrates, particularly by hummingbirds and other birds, and bats, but also by monkeys, marsupials, lemurs, bears, rabbits, deer, rodents, lizards and other animals. Zoomophilous species, like entomophilous species, frequently evolve mechanisms to make themselves more appealing to the particular type of pollinator, e.g. brightly colored or scented flowers, nectar, and appealing shapes and patterns. These plant animal relationships are often mutually beneficial because of the food source provided in exchange for pollination.





http://en.wikipedia.org/wiki/Anemophily - has all links used

2 mechanisms of pollen transfer and adaptations to facilitate ech mechanism?
Entomolphily:- Aided by brightly coloured petals


Ornithiphily:- Aided by funnel like long corolla

DOG

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