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See how plants absorb water through the process of osmosis.

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Introduction

OSMOSIS COURSEWORK: Aim: the aim of this investigation was to see how plants absorb water through the process of osmosis. Introduction: In this investigation is that I will be investigating the effects of osmosis on plants. I will be exposing potatoes to different concentration of sucrose and water. I will be taking down the changes that occur within the weight that either been gained or lost on the potato. To make it a fair test I will make sure that the tests will be conducted fairly. Osmosis: is the diffusion of fluid through a semi-permeable membrane from a solution with a low solute concentration to a solution with a high solute concentration until there is an equal concentration of fluid on both sides of the membrane. Equipment list: * Test tubes * Measuring cylinders * Stopwatch * Potatoes * Sucrose (2m) ...read more.

Middle

Prediction: I predict that the concentration of the water will increase; this is the water that I present outside of the potato. The weight of the potato will decrease. It can also increase weight of the potato if the concentration of the water increases (pure water not containing any sucrose) I will collect my results in a table, and do a preliminary test first, that do my actual experiment. Obtaining evidence: Preliminary Trials Before starting my experiment I have decided to do a preliminary trial this is because I will be carrying out the experiment for the first time. 1 2 3 4 5 Weight before osmosis 0.9g 1.0g 1.1g 1.0g 1.3g Weight after osmosis 1.0g 0.9g 0.8g 0.6g 0.9g Pure water 20ml 15ml 10ml 5ml 0ml Sucrose 0ml 5ml 10ml 15ml 20ml Molor 0 molor 0.5 molor 1 molor 1.5 molor 2 molor Here I practiced how I would carry out my investigation and how I would set out for my results. ...read more.

Conclusion

molor Set 3 1 2 3 4 5 Weight before osmosis 0.9g 0.8g 1.0g 0.8g 0.9g Weight after osmosis 0.9g 0.7g 0.6g 0.4g 0.4g Pure water 20ml 15ml 10ml 5ml 0ml Sucrose 0ml 5ml 10ml 15ml 20ml Molor 0 molor 0.5 molor 1 molor 1.5 molor 2 molor Anomalies: When experiments and investigations are taken place, the results do not follow an expected pattern in which other results follow. I do have anomalies appearing in my experiment. I chose to do another set of results set 3. I have also shown my results set 1 and 2 that shows some results that are anomalies. Conclusion: My aim of this investigation was to see how plants absorb water through the process of osmosis. This experiment has shown me how osmosis allows the loss of water and gains dependant on the concentrations of each side of the semi permeable plant membrane. ...read more.

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