wdisper_11

wdisper_11 - maximum of a mile away We could test this by...

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Assignment # 11. Seed Dispersal (10 points) Name:Darin Kleinsmith_ Subject Link Grand Canyon Plants http://www6.nau.edu/bio/bio300/GCplants.htm USDA Plants Database http://plants.usda.gov/ Invasive Species http://www.invasive.org/ 1. Pick a species (scientific name and common name) in the Grand Canyon for which you can find the information to answer these questions? Acer glabrum Torr., Rocky Mountain maple 2. What is the method by which seeds of this plant are dispersed? Give an estimate of the distance from the parent plant where its seeds will come to rest and explain how you arrived at this estimate. How could you test this estimate in the Canyon with seeds from the plant you picked? The maple is a dioecious or monoeicious plant with some bisexual flowers. The seeds are covered by a samara which are dispersed by the wind. They disperse usually in September and prefer disturbed areas. Since the trees grow to 20 to 30 feet tall I would estimate that the seeds could disperse on a windy day to a
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Unformatted text preview: maximum of a mile away. We could test this by dropping a seed from that height and recording the distance it travels. 3. Are these seeds likely to germinate immediately or lie dormant? Explain. The seeds require approximately 6 months of dormancy for it to germinate in the spring. Germination for the seeds requires partial shade. Usually rates of germination are still low. 4. Provide the url to an online photo of this species. http://plants.usda.gov/java/profile?symbol=ACGL&photoID=acgl_1h.jpg 5. What source(s) did you use to obtain your information (find citation format on the Reference page. http://plants.usda.gov/java/profile?symbol=ACGL http://plants.usda.gov/java/profile?symbol=ACGL&photoID=acgl_1h.jpg http://www.fs.fed.us/database/feis/plants/shrub/acegla/all.html...
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