| Date | May 2017 | Marks available | 3 | Reference code | 17M.3.SL.TZ2.6 |
| Level | Standard level | Paper | Paper 3 | Time zone | Time zone 2 |
| Command term | Analyse | Question number | 6 | Adapted from | N/A |
Question
The graph shows the relationship between body mass and brain volume in three groups of primates.
Analyse the relationship between body mass and brain volume in these primates.
Markscheme
a. in all groups an increase in body mass means an increase in brain volume
b. in the apes, brain volume has increased only slightly with body mass
c. in the Homo group brain volume increases steeply with body mass
d. in Australopithecines brain volume has increased only slightly with body mass
OR
in Australopithecines fewer species were studied
e. at a small mass the brain volumes are more similar
Examiners report
[N/A]
Syllabus sections
Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Core topics) » A.2 The human brain
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