| Date | November 2015 | Marks available | 3 | Reference code | 15N.3.SL.TZ0.14 |
| Level | Standard level | Paper | Paper 3 | Time zone | TZ0 |
| Command term | Distinguish | Question number | 14 | Adapted from | N/A |
Question
Draw a labelled diagram of a reflex arc for a pain withdrawal reflex.
[4]
a.
Distinguish between innate behaviour and learned behaviour.
[3]
b.
Markscheme
Award [1] for any one of the following clearly drawn and correctly labelled.
a. spinal cord – showing white and grey matter;
b. spinal nerves – showing dorsal and ventral roots;
c. sensory neuron / receptor;
d. motor neuron / effector;
e. relay neuron;
f. arrows showing path from stimulus/receptor to response/effector;
a.
b.
Examiners report
There was a range of diagrams of the reflex arc but the majority got all 4 marks.
a.
Most candidates had difficulty scoring 3 marks in their distinctions between learned and innate behaviour.
b.
Syllabus sections
Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Additional higher level topics) » A.4 Innate and learned behaviour
Show 73 related questions
