Monday, November 16, 2009

Classify please????

classify these things under win pollinated or animal pollinated...


pine tree:?


carnation


rose


ragweed


african violet


orchid


grass


lily


and cactus


take guesses if you have no clue i just need homework help

Classify please????
pine tree: The pollen grain has wings on each side that aid in dispersal through the air.





carnation: In the wild, cross-pollination of carnation relies on insect pollinators.





rose: Bee pollinated





ragweed: Wind - One ragweed plant is capable of producing over a billion grains of pollen per season. Ragweed produces an estimated 100 million tons of pollen each year in the US alone.





african violet: %26quot;Knowledge of the pollination biology and breeding systems of the genus is scanty. Some, if not all, of the species appear to be self-compatible. In the botanical gardens Saintpaulia is sometimes self-pollinated by thrips (who eat the pollen), which can result in the production of seed-pods. Crooked styles that grow into the anthers have also been observed to lead to self-fertilization in the greenhouses (J. Smith, pers. com.). Wilson (1898) carried out some flower biological studies on Saintpaulia ionantha and was of the opinion that fertilization requires an insect visit because the pollen is not shed spontaneously. He thought that self-pollination cannot take place because the style protrudes away from the anthers (herkogamy, the spatial separation of the anthers and the pistil). Wilson also suggested a possible mechanism of anther dehischence: the insect, when trying to reach the nectary at the base of the ovary, passes its head between the filaments and gets caught. When it tries to release itself pollen is shaken out of the anthers.%26quot; [http://www.mv.helsinki.fi/jkolehma/artic...





orchid: Insect pollination, primarily. Orchids are exceptional in that perhaps as many as one third of the 30,000 or so species achieve pollination by deception. That is, they lure animal pollinators to the flower by false promises of food, but do not provide any. Most of these species are ‘food deceptive’ falsely advertising the presence of food by bright colors and sweet scents.





grass: Wind pollination is often most effective in plants that are normally gregarious e.g. grasses in grasslands.





lily: For the Cahaba lily pollination is by the plebian sphinx moth, Paratrea plebeja








and cactus: Nectar-feeding bats are the primary pollinators of the Organpipe cactus. Senita has a recently discovered mutualistic relationship with a moth that deliberately pollinates the flowers and uses the developing fruit as food for its larvae. Cactus bees (Lithurge spp.) pollinate the flowers of the fishhook barrel cactus.





A general rule and grouping is:





Biotic pollination (by organisms)





Entomophily: pollination by insects


Bees, wasps and occasionally ants


Beetles


Moths and Butterflies


Flies





Zoophily: pollination by vertebrates such as birds or bats


Hummingbird


Sunbird


Spiderhunter


Honeyeater





Abiotic pollination





Anemophily: pollination by wind


very common in grasses


Most Conifers


Many deciduous trees
Reply:Definitely wind are: pine, ragweed, grass


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