| Date | May 2010 | Marks available | 2 | Reference code | 10M.3.SL.TZ1.19 |
| Level | Standard level | Paper | Paper 3 | Time zone | Time zone 1 |
| Command term | Outline | Question number | 19 | Adapted from | N/A |
Question
State the type of receptor cells that detect sound.
Outline the role of inheritance and learning in the development of birdsong in young birds.
Markscheme
mechanoreceptor
inheritance plays role as basic song is the same for all members of a species;
birds raised in isolation still sing but song lacks complexity/sounds different from song heard in the wild / more complex songs develop when there is social interaction;
young birds learn details of songs/dialects from fathers/other birds;
(development of birdsong) is a form of motor learning/ability to learn is genetic/inherited;
Examiners report
Most candidates were able to give the correct answer to this.
This was generally not answered well apart from a few candidates who had obviously been well prepared. Most answers were vague and did not address the points in the mark scheme.
