| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.SL.TZ0.5 |
| Level | Standard Level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Identify | Question number | 5 | Adapted from | N/A |
Question
The resource booklet provides information on Madagascar. Use the resource booklet and your own studies to answer the following.
Identify one of the criteria that may have been used by the International Union for Conservation of Nature (IUCN) Red List to classify aye-aye as endangered.
Markscheme
This question requires “Resource Booklet - May 2018 SL paper 1”, available under the "your tests" tab > supplemental materials.
reduction in population size;
population size / low population;
number of mature individuals / number of individuals able to reproduce;
geographical range / area of occupancy (i.e. where species are normally found) / extent of occurrence (boundary line that can be drawn around sites that the species occupies);
reduction in number of locations (the species is found in);
degree of fragmentation (e.g. via road or urban development);
quality of habitat / loss of habitat / habitat degradation;
probability of extinction;
Link must be made to the IUCN factors, as listed above.
Examiners report
Only about half the candidates answered this question correctly. Common errors included focusing on 1933 when Aye-aye were incorrectly considered to have been extinct, that Aye-aye are endemic species or the fact that they are hunted.
