detect light‚ its direction‚ intensity and wavelength. Most responses are triggered due to plant hormones. Tropism is any type of response that results in curvature of of organs toward or away from a stimulus (ex. Light). Plants reproduce by pollination‚ also called fertilization‚ which is the transfer of pollen from an anther to a stigma. A pollen grand produces a pollen tube. Eventually sperm will be discharged near the embryo sac and pollen develops. Products are seeds and fruits. Another way
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Commercially growing seed lots have up to 10% of monoecious plants to provide sufficient pollen for fruit set but European cucumbers; which are grown in greenhouses‚ set fruit without pollination (parthenocarpic). A few cultivars of cucumber are parthenocarpic‚ the blossoms create seedless fruit without pollination.
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system. It was determined by doctors that I would never be normal. After weeks of being in the hospital I was released to the care of an adoption agency. At 6 months I was given to the care of my first cousin. She dropped out of her junior year at Binghamton University to take me in. Years passed and it wasn’t until the age of twelve that I officially
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downturn. The Times of London reported that U.S. job losses were directly linked to 58 fatalities in eight incidents during one month in 2009. Among them was a Vietnamese man fired from his factory job who killed 13 people at an immigration center in Binghamton‚ New York. It’s not just displaced-worker violence that is getting headlines. Among nearly 400 employees asked in late 2008 whether the recession had caused a recent rise in thefts of money among employees‚ 18 percent said yes‚ 41 percent said
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Biological Sciences Research Council. BBSRC‚ 22 Oct. 2012. Web. 10 Apr. 2013. “Humans Must Change Behavior to Save Bees‚ Vital for Food Production—UN Report.” UN News Centr.e UN Publications‚ 10 Mar. 2011. Web. 25 Apr. 2013. Kindersley‚ Dorling. “Pollination.” E. Encyclopedia Science. Infoplease‚ 2007. 25 Apr. 2013. Litman‚ Gary W.‚ et al. “Reconstructing Immune Phylogeny: New Perspectives.” Nature Reviews. Nature Publishing Group‚ Nov. 2005. Web. 30 Apr. 2013. Morelle‚ Rebecca. “Neonicotinoid Pesticides
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insect pollinators. Another characteristic that can be seen in Aroids‚ particularly in C. esculenta is protogyny. This process involves the female flowers becoming fertile and receptive before the male flowers to help ensure successful cross pollination. The leaves are 20 to 50 centimeters‚ broad‚ long-petioled‚ ovate and are in groups of two or three. The shape is peltate in almost all species. Leaves
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developed flowers‚ which have distinct and pleasurable shapes‚ colors‚ smells‚ chemicals‚ and nectar to attract insects and birds‚ which help in pollination. Males developed microspores‚ which is pollen‚ and a reduced gametophytes. The pollen grain became very light weighted and easily blown about in order to increase motility. It is now possible for pollination to occur by wind‚ insects. In fact‚ many plants can even self-pollinate. The female also developed a reduced gametophytes‚ in the megaspore
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Monsanto Company is a global supplier of agricultural products that had sales in excess of $6.3 billion in 2005 (c-548). It sold genetically modified (GM) canola seeds in Canada and GM soybean seeds in the United States. The company developed a patented process in Canada that “covered the gene and process for insertion…and cells derived from that process‚” and in the United States covered the entire plant. By using this patented process‚ seeds had an increased resistance to glyphosate (many generic
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prominent and widely used products does not come unaccompanied. Genetically modified organisms have numerous effects that have become apparent‚ and many more that have yet to surface. The unintended relocation of transgenes that occurs through cross-pollination has a great potential to cause harm to other organisms. Those organisms eventually hybridize with close wild relatives‚ now scientifically enhanced‚ and produce undesired effects‚ many of which are still unknown. When hybrids survive and reproduce
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BIOLOGY Paper 2 Core 1 hour 15 minutes No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Answer all questions. 1 2 3 4 5 6 7 8 9 Total This document consists of 14 printed pages and 2 blank pages. IB10 11_0610_21/4RP © UCLES 2010 [Turn over 2 1 (a) Fig. 1.1 shows a mammal. For Examiner’s
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