Question 17
Section A: choose the correct answer. The supplied key prints 2 points per question and 50 minutes. Source header says Qualifying Examinations; key says Taiwan (2).
According to the historical table, which group suffered the largest percentage loss to extinction?
Estimated extinctions since 1600 (source data)
| Group | Mainland | Island | Ocean | Total | Approx. species | % extinct |
| --- | --- | --- | --- | --- | --- | --- |
| Mammals | 30 | 51 | 4 | 85 | 4000 | 2.1 |
| Birds | 21 | 92 | 0 | 113 | 9000 | 1.3 |
| Reptiles | 1 | 20 | 0 | 21 | 6300 | 0.3 |
| Amphibians | 2 | 0 | 0 | 2 | 4200 | 0.05 |
| Fish | 22 | 1 | 0 | 23 | 19,100 | 0.1 |
| Invertebrates | 49 | 48 | 1 | 98 | 1,000,000+ | 0.01 |
| Flowering plants | 245 | 139 | 0 | 384 | 250,000 | 0.2 |
According to the historical table, which group suffered the largest percentage loss to extinction?
Estimated extinctions since 1600 (source data)
| Group | Mainland | Island | Ocean | Total | Approx. species | % extinct |
| --- | --- | --- | --- | --- | --- | --- |
| Mammals | 30 | 51 | 4 | 85 | 4000 | 2.1 |
| Birds | 21 | 92 | 0 | 113 | 9000 | 1.3 |
| Reptiles | 1 | 20 | 0 | 21 | 6300 | 0.3 |
| Amphibians | 2 | 0 | 0 | 2 | 4200 | 0.05 |
| Fish | 22 | 1 | 0 | 23 | 19,100 | 0.1 |
| Invertebrates | 49 | 48 | 1 | 98 | 1,000,000+ | 0.01 |
| Flowering plants | 245 | 139 | 0 | 384 | 250,000 | 0.2 |