CAIE A-Level Biology AS 4.2.5 Water Potential Investigation Questions
Design and interpret water-potential investigations using concentration gradients, controls and measured mass or volume changes.
- Syllabus
- 2028–2030
- Course
- Biology 9700
- Level
- AS
Exam points
- Design and interpret a water-potential investigation using concentration gradients, controls and measured mass or volume changes.
CAIE A-Level Biology AS 4.2.5 Water Potential Investigation Questions question 1
[Maximum number: 1]
Four cylinders that were identical in size, A, B, C and D, were cut from potatoes that had been stored for different lengths of time.
The cylinders were weighed, immersed in 10\% salt solution for 45 minutes and then reweighed.
The percentage change in mass was then calculated.
Which cylinder had a water potential similar to the 10 % salt solution?
percentage
change in mass
-7.2
-2.5
-0.9
+3.4
C
All question bank results loaded