O-LevelBiologyPlant Nutrition5090/12 · Oct/Nov 2018 · Q61 Mark
An experiment is set up as shown. The volume of gas collected is measured after 30 minutes. [Figure 6.1] The experiment is repeated several times. Each time the light intensity is increased. Which graph shows the results?
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AGraph showing volume of gas produced increasing, then levelling off, with a less steep initial gradient.
BGraph showing volume of gas produced increasing slowly then more rapidly, forming a concave up curve.
CGraph showing volume of gas produced increasing rapidly, then levelling off, forming a concave down curve.
DGraph showing volume of gas produced decreasing as light intensity increases.
✓ Correct answer
C: Graph showing volume of gas produced increasing rapidly, then levelling off, forming a concave down curve.
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