| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.HL.TZ1.16 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 16 | Adapted from | N/A |
Question
In ecosystems the amount of energy that passes from one trophic level to the next is called the conversion efficiency. What is the average conversion efficiency from primary to secondary consumers in most ecosystems?
A. 1 %
B. 10 %
C. 50 %
D. 90 %
Markscheme
B
Examiners report
N/A
Syllabus sections
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