| Date | May 2019 | Marks available | 2 | Reference code | 19M.1.SL.TZ0.4 |
| Level | Standard Level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Suggest | Question number | 4 | Adapted from | N/A |
Question
Figure 4(b): Coral reef fish diversity
Figure 4(c): Global distribution and species diversity of corals, mangroves and seagrasses
With reference to Figures 4(b) and 4(c), suggest how fish diversity may be influenced by the habitat diversity of the Coral Triangle.
Markscheme
high diversity of habitats/variety of habitats provide a variety of niches that supports high fish diversity / high diversity of habitats/seagrass/corals/mangroves leads to high diversity of fish;
variety of habitats provide different food sources that support a wide range of fish species;
variety of habitats provide different breeding/nursery grounds for diversity of fish;
variety of habitats provide different shelter/protection from predators which increases fish diversity;
Accept converse statements eg fewer niches outside coral triangle result in less fish diversity.
Accept use of “animal diversity” as an alternative for “fish diversity”.
Do not accept ‘availability of resources’.
[2 max]
Examiners report
Most candidates only achieved one out of two marks by recognising that fish diversity would be high when habitat diversity is high. Very few candidates were able to provide a reason for this.
