Q13 · Practice questionSimple familiar1 mark
QUESTION 13
Lichens begin colonising a newly exposed lava flow with no soil. This is an example of
(A)
secondary succession, because lava contains minerals.
(B)
primary succession, because colonisation begins without established soil.
(C)
secondary succession, because lichens are organisms.
(D)
primary succession, because all previous seeds survived.
WORKED SOLUTION
1 markAnswer B
Answer
B
Working
The distinguishing feature is the absence of established soil. Pioneer organisms contribute to weathering and organic matter accumulation during primary succession.
Marking criteria
- Select B. [1 mark]
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
View the QCAA syllabus