20. Three identical potato cylinders were used to investigate water movement in plant cells.
Cranberry juice is a red fruit juice that contains natural sugars.
Three test tubes set up as shown in the figure below and left for one hour.
test-tube 1
test-tube 2
test-tube 3
potato cylinder
water
dilute solution of
cranberry juice
concentrated solution
of cranberry juice
After one hour the potato cylinders were removed from test tubes 1 to 3
The mass of each potato cylinder is recorded in the table
test-tube number
mass of the potato
cylinder at the start/g
25
mass of the potato
cylinder after one hour/g
30
1
25
25
2
19
25
3
a. Describe the results for test tubes 1 and 2
Test tube 1 --
Test tube 2 -
b. Explain why the potato cylinder lost mass in test tube 3
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