Science Focus 2 TEST Chapter 7 - Pearson Australia Media ...

Science Focus 2 TEST
Chapter 7: Plant systems
10 The graph below shows the effect of
light intensity on the rate of
photosynthesis.
4
Explain
a why the rate increases in the first
section (I) of the graph.
b why the rate does not increase in
the second section (II) of the
graph.
11 An experiment was conducted using the
flasks shown below. All flasks
contained water, were at the same
temperature and were in sunlight.
4
After two hours the carbon dioxide level
in each flask was measured.
a Identify the flask (A–D) in
which the carbon dioxide level
would be lowest after two hours.
b Explain how you arrived at your
choice in part (a).
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