Paper 1 H - SAMPLE SET 1 Q18 Answers
18) Emma wants to investigate the effect of air movement on transpiration.
The diagram shows how she sets up her experiment.
The diagram shows how she sets up her experiment.
Emma measures the rate of transpiration by measuring the loss in mass over 3 hours.
She does this first with the fan switched off.
She then repeats this but with the fan switched on.
She keeps all other environmental conditions the same.
These are her results.
She does this first with the fan switched off.
She then repeats this but with the fan switched on.
She keeps all other environmental conditions the same.
These are her results.
(a) Explain the difference in her results. [2]
(b) Emma kept environmental conditions like light intensity and temperature the same.
(i) Why was it important to keep the light intensity the same? [2]
(ii) Why was it important to keep the temperature the same? [1]
(Total for Question 18 = 5 marks)
(b) Emma kept environmental conditions like light intensity and temperature the same.
(i) Why was it important to keep the light intensity the same? [2]
(ii) Why was it important to keep the temperature the same? [1]
(Total for Question 18 = 5 marks)
