Q1 · 2024 · Paper 2Unclassified3 marks
QUESTION 1 (3 marks)
This cladogram shows the development of key features in species A to G.
a) Identify the most distant relative of species C.
[1 mark]
b) List all the features you would expect to observe in the most recent common ancestor of species C and F.
[1 mark]
c) Identify the features that could be used to distinguish between species C and D.
[1 mark]
WORKED SOLUTION
3 marksQCAA guide · typeset solution
QCAA sample response and mark allocation
1a) | Species A | • identifies species A [1 mark] |
1b) | Backbone, bony skeleton, four limbs | • identifies backbone, bony skeleton and four limbs [1 mark] |
1c) | Hair and amniotic egg | • identifies hair and amniotic egg [1 mark] |
QCAA sample response and marking criteria reproduced from the official guide.
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