Water Potential Flashcards
1
Q
Explain the method for working out the water potential of plant tissue (potato cylinders) using different concentrations of sucrose solution
A
1) prepare the sucrose solutions in the following concentrations of 0.0M, 0.2M, 0.4M 0.6M, 0.8M, and 1.0M
2) use a cork borer to cut the potatoes into the same sized pieces
3) divide the potatoes into groups of threes and use a mass balance to measure the mass of each group
4) place one group in each solution
5) leave the potatoes in the solution for the same length of time around 20 minutes
6) remove the potatoes and pat dry gently with a paper towel
7) weigh each group again and record your results
8) calculate % change in mass for each group, then plot results on a graph like this
