Question 22N.1.SL.TZ0.21
| Date | November 2022 | Marks available | [Maximum mark: 1] | Reference code | 22N.1.SL.TZ0.21 |
| Level | SL | Paper | 1 | Time zone | TZ0 |
| Command term | Question number | 21 | Adapted from | N/A |
The table shows the presence or absence of four finches from the Geospizinae subfamily on seven of the Galapagos Islands. Cactus finches feed on cacti and warbler finches feed on insects or seeds. Presence on an island is indicated by a tick.
What might be a reason for the distribution of the large cactus finch?
A. Cacti are only found on Española.
B. Large cactus finches on other islands all flew to Española.
C. The beaks of large cactus finches on Floreana changed in order to feed on other sources.
D. A variation of the beak in a finch on Española enabled it to feed successfully on a cactus.
[1]
D
This question concerned the distribution of the large cactus finch on the Galapagos Islands. Although 61% of candidates answered this question correctly, it discriminated poorly showing many of the stronger candidates were answering incorrectly. The incorrect responses were distributed fairly equally among the other 3 choices.
