Investigation of How Plants Absorb Water Through Osmosis

Investigation of How Plants Absorb Water Through Osmosis

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

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· Measuring cylinders

· Stopwatch

· Potatoes

· Sucrose (2m)

· Water

· Measuring scales

· Test tube rack

· Potato cutter

Method:

1. Clean out all equipment before use.

2. Cut 5 cylindrical tubes of potato.

3. Weigh each potato.

4. Place each potato in a test tube.

5. Measure out sucrose using measuring cylinders.

6. Start the timer, let it countdown, and pour the sucrose and water

into each test tube.

7. To let osmosis take place, wait 50 minutes using the timer.

8. Weigh each potato again, and empty the solution. This lets it be a

fair test as I can compare the results before and after adding the

sucrose and water.

9. Then repeat this 3 times.

4 factors affecting the investigation:

- The temperature will affect how the reaction as temperature affects

photosynthesis.

- The experiment is done by hand and the human eye, accuracy and human

error.

Prediction:

I predict that the concentration of the water will increase; this is

the water that I present outside of the potato.