Duckweed is very
simple, lacking an obvious stem or leaves. They consist of a small plate-like structure only a few cells thick that float on or just under the
water surface, with or without simple rootlets.Reproduction is mostly
by asexual
budding, but occasionally sexual
reproduction occurs. The flower of duckweed genus Wolffia is the smallest known
flower in the world.
Resources:
http://en.wikipedia.org/wiki/Duckweed
http://www.cpcb.nic.in/News%20Letters/Archives/R&D%20for2003/pollutioncontrol.html
http://www.mobot.org/jwcross/duckweed/practical_duckweed.htm
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http://www.mobot.org/jwcross/duckweed/education.htm
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http://www.nicholls.edu/phsc/lasip/02/module5.doc
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http://www.cs.uml.edu/teams-academy/index.php/Student/MananLindaTaylorDuckWeed
http://www.unl.edu/cbrassil/duckweed-project-0
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http://apcentral.collegeboard.com/apc/members/repository/ap03_apes_prim_grass__34378.pdf
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http://www.rutgers.edu/about-rutgers/make-way-duckweed
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http://www.bssd.net/academic/gen/blue_springs_generated_bin/documents/attachments/Population%20Growth%20in%20Lemna%20minor.doc
http://www.depts.alverno.edu/nsmt/nutrient.htm
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http://faculty.fairfield.edu/genbio/lab172/Lemna%20project%20guidelines%202010.pdf
http://www.uteach.utexas.edu/PBI/PBI_Projects/Water_In_Our_Lives/Plant_Structure_Reproduction.pdf
http://apcentral.collegeboard.com/apc/members/courses/teachers_corner/2104.html
http://essaysbank.com/essay/the-duckweed-experiment-effects-of-lowering-light
http://www.nsta.org/pdfs/store/pb162x1sweb.pdf
http://biology.kenyon.edu/courses/biol229/PopGrowthComp1-student2010.pdf
http://www.education.com/science-fair/article/light-affects-plant-growth/
