1.1
Identify the apparatus shown above
1.2
What is the aim of this investigation?
1.3 a. Independent variable
b. Dependent variable
1.4
Explain why the leafy shoot should be cut underwater.
1.5 a. Explain the purpose of the air bubble.
(2
(1
(2)
(2)
b. Explain how the speed of movement of the air bubble will be affected if Mpho apply
Vaseline to
the ventral surface of all the leave.
(2)
1.6
What is the purpose of the water in the reservoir?
(2)
1.7
State TWO way in which the Grade 10 learners ensured the reliability of this
investigation.
(2)
.8
Mpho recorded the result of her experiment as indicated below. Study the results and
answer questions that follows.
a.
b.
Temperature °C
22 25 27 28 30
Transpiration rate (mol /m² sec) 1.5 3.5 5 4.5 4
Draw a suitable graph to illustrate the above results.
Give suitable conclusion for this investigation.
(6)
(2)
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