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CIE iGCSE Co-Ordinated Science B8.3 Transpiration Exam Style Questions Paper 1

CIE iGCSE Co-Ordinated Science B8.3 Transpiration Exam Style Questions Paper 1

Question

In which conditions will the rate of transpiration be greatest?

A   10 C and high humidity

B   10 C and low humidity

C   30 C and high humidity

D   30 C and low humidity

▶️Answer/Explanation

Ans :C

Question

Which changes increase the rate of transpiration?

1 increasing temperature
2 increasing humidity
3 decreasing temperature
4 decreasing humidity
A  1 and 2     B  1 and 4      2 and 3      3 and 4

▶️Answer/Explanation

Ans :A

Question

Where does evaporation of water occur during transpiration?
A from the air spaces through the stomata
B from the phloem
C from the surfaces of mesophyll cells
D from the xylem

▶️Answer/Explanation

Ans :C

Question

The diagram shows a shoot at the start of an experiment investigating transpiration. The mass of the shoot, measuring cylinder, water and oil is measured.

The apparatus is left for three days and then the mass recorded for a second time.
Under which conditions would there be the most loss of mass from the apparatus?

▶️Answer/Explanation

Ans : B

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