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02207032/CAPE/SPEC/KMS 2017

CAPE BIOLOGY

UNIT 2 -- PAPER 032

MARK SCHEME

1 mark for each point correctly done
1 mark x 5 points – 5 marks 5

UK XS
Question 2. (continued)

(d) (i) As distance from lamp decreases/increases THEN volume of
gas SHOULD increase/decrease.

Future tense MUST be used – 1 mark
Future tense NOT used – 0 mark 1

(ii)  Table must have title.

 3 columns, distance from lamp, light intensity,
volume of oxygen.

 Units must be shown, at least for lamp distance and

volume of oxygen.

 Distances from lamp must be shown in increasing or
decreasing order.

Example of table showing the effect of light intensity
on rate of photosynthesis.

Distance of Lamp cm Light Intensity Volume of O2 cm

80
40
20
10
5

3 – 4 points – 2 marks
1 – 2 points – 1 mark 2

(e)  Amount of light in room, not given off from lamp can
affect results when distance from lamp is great.

Limitation stated and explained - 1 mark 1

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