Osmosis in Potato Tubers Andrew Dickson Background When a plant cell is bathed in a solution of the same concentration (isotonic) as its intracellular environment‚ its mass and volume remain the same. This is because water enters and leaves the cells at the same rate. There is no net loss or gain of water by osmosis. Samples of cells can be placed in a range of solutions of different concentration. The cells will gain water by osmosis when placed in solutions which are more dilute (hypotonic)
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means there is no net loss or gain of water. Introduction This study shares the results of an effort to understand diffusion and osmosis in general. It focused more into osmosis in plants cell‚ and how to indirectly measure osmolarity in potato tuber tissue. Osmosis is the diffusion specifically of water across a membrane. Diffusion occurs when certain substance‚ such as an ion‚ is more concentrated on one side of membrane. If the membrane allows this ion through‚ the ions will move from the
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Sucrose Solutions to Determine Osmolarity of Potato Tubers Based on Weight By Thomas Pelikan Biology 200A Section 004 Kimberly Schmidt October 2‚ 2012 Abstract: In this experiment we were trying to determine the osmolarity of potato tubers by weighing them before and after incubating them in solutions of sucrose with varying molarities. To find the osmolarity we took a potato and used a cork borer to obtain seven samples of potato tubers. We then prepared seven beakers with concentrations
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GLADSTONE ROAD AGRICULTURAL CENTRE CROP RESEARCH REPORT NO. 1 TUBER QUALITY AND YIELD OF FOUR SWEET POTATO VARIETIES EVALUATED DURING 2007 Kenneth VA Richardson Department of Agriculture Nassau‚ Bahamas November 2009 ABSTRACT A variety trial was conducted on four sweet potato varieties from April to October 2007 at the Gladstone Road Agricultural Centre. The variety ‘Six Weeks’‚ which is an early maturing variety with white flesh and high dry matter content‚ produced the highest marketable yield
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PRODUCTION OF CASSAVA TUBERS (MANIHOT ESCIDENTA) USING AN ENHANCED METHOD OF PLANTING A SCIENCE INVESTIGATORY PROJECT OF B’LAAN NATIONAL HIGH SCHOOL LITTLE BAGUIO‚ MALITA‚ DAVAO DEL SUR PHYSICAL SCIENCE CLUSTER 1 TEAM CATEGORY AN ENTRY TO THE 2012 DIVISION SCIENCE FAIR Researchers: JEMHUEL P. CANTOMAYOR HEZEL JANE GASCON SIP Adviser: JANICE MARICOR M. AQUINO ABSTRACT The study was located in the hilly side of Little Baguio‚ Malita‚ Davao del Sur nearby in
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OSMOSIS Aim To determine the water potential of potato tuber cells. Background knowledge Osmosis is defined as the movement of water molecules from a region of higher water potential to a region of lower water potential through a partially permeable membrane. Osmosis is considered in terms of water potential and solute potential. Water potential is a measure of the kinetic energy of water molecules. Here‚ water molecules are constantly moving in a random fashion. Some of them collides with cell
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Experiment to Investigate Osmosis in Potatoes The aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. Osmosis is the passage of water from a region of high water concentration through a semi permeable membrane to a region of low water concentration. This definition contains three important statements: a) It is the passage of water through a semi permeable membrane
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increases. Relative osmotic concentration was measured as the percent change in mass of sucrose concentration over one hour. Results are the sucrose concentration and percent change in mass. Table 1. Estimating osmotic concentration of potato tuber cells by change in mass method Sucrose Concentration (molarity) 0 0.1 0.2 0.3 0.4 0.5 % Change in mass 18 7.9 19.4 -1.7 -16.3 -23.7 Discussion Osmosis is the movement of water across a selectively permeable membrane from a solution that has
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An investigation to find the water potential of potato and carrot tubers in a sucrose solution‚ of concentration 0.00 – 0.50Mol‚ over a 24 hour period Interpretation Written Communication C1 From our graph it can be seen that the concentration of sucrose solution is 0.18 M at 0% change in mass for the potato and 0.355 M at 0% change in mass for the carrot. I will use these values to find the solute potential by using the calibration graph. I will work out the water potential by using the
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(g/hill)‚ number of tubers per hill‚ weight of tubers per hill‚ total yield of tubers per hectare and yield of seed and non-seed tubers per hectare. Application of 254.0 kg N/ha gave the highest yield of tubers (24.33 t/ha) and seed tubers (19.14 t/ha). Significant variation was observed due to the effect of the three plant spacings viz. 60 x 15‚ 60 x 20 and 60 x 25 cm2 in respect of the above-mentioned parameters except days required for 80% maturity of the crop and yield of non-seed tubers per hectare
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