Zandile set up the following apparatus to investigate how temperature affects transpiration rate.
leafy shoot
Water
reservoir
waterproof
seal
tap
air bubble
ruler
(1
)
1.1 What is the name of this apparatus?
(1)
(2)
1.2 Why should this apparatus be allowed to stand before starting the
experiment?
1.3 Give a hypothesis for this experimental investigation.
1.4 Identify the
(a) Dependent variable
(1)
(b) Independent variable
1.5 The above apparatus was used to investigate the effect of temperature
transpiration rate. Study the results obtained in the table below.
22
25
27
28
30
5
3,5
4,5
Temperature C
Transpiration rate
(mmol/m2 sec)
4
1,5
Draw a line graph to illustrate these results.
(6)
1.6 What can you conclude about the relationship between temperature ar
transpiration rate?
(2
(1​