Q6 · Practice questionSimple familiar1 mark
QUESTION 6
The graph shows a population growing in a closed habitat. Which explanation best accounts for the shape after day 10?
(A)
The birth rate must have become zero.
(B)
Limited resources increase density-dependent competition.
(C)
The population becomes an r-strategist.
(D)
Individuals stop interacting once the habitat is full.
WORKED SOLUTION
1 markAnswer B
Answer
B
Working
The population approaches a carrying capacity near 600. As density rises, competition for limited resources reduces net population growth; births and deaths can still occur.
Marking criteria
- Select B. [1 mark]
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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