| Date | November 2010 | Marks available | 3 | Reference code | 10N.3.SL.TZ0.3 |
| Level | Standard level | Paper | Paper 3 | Time zone | TZ0 |
| Command term | Label | Question number | 3 | Adapted from | N/A |
Question
Label the levels of the trophic pyramid of energy shown below.
Markscheme
X: tertiary consumers;
Y: secondary consumers;
Z: producers;
Examiners report
Labelling the pyramid of energy was a very easy 3 marks for the majority of candidates.
Syllabus sections
Option C: Ecology and conservation » Option C: Ecology and conservation (Core topics) » C.2 Communities and ecosystems
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