Q101 · Practice questionSimple familiar1 mark
QUESTION 101
Two beetle groups live in the same forest and have almost identical appearances. Each group breeds successfully within itself, but crosses between the groups consistently produce sterile offspring. Which conclusion is most consistent with the biological species concept?
(A)
Their similar appearance proves they are one species.
(B)
They may be different biological species because their hybrid offspring are infertile.
(C)
They are different species only if they live on different continents.
(D)
They must have identical allele frequencies because they share a habitat.
WORKED SOLUTION
1 markAnswer B
Answer
B
Working
The breeding evidence supports reproductive isolation despite similar appearance. Morphological similarity alone does not establish that the groups are one biological species.
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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