IB ESS HL 3.1.13 Human-Driven Selection Question Bank

Analyse how human activity imposes selection pressures on populations.

Exam points

identify the biodiversity or evolutionary process
apply the correct diversity, selection or conservation concept
justify the conclusion with evidence and ecological reasoning

[Maximum number: 2]

(a)

Figure:Distribution of two peppered-moth forms

the peppered-moth distribution map shown above below shows the distribution of two forms of peppered moths in woodlands of the UK in the 1950s. At the time, surfaces of most trees in Central and South Eastern England were heavily blackened with deposits of carbon from local coal burning. There are two forms of the moth, dark and light, and both may be eaten by woodland birds.

[ 2 ]

(i)

Describe the relationship between the distribution of the two forms of moths and habitat pollution.

[ 1 ]

(ii)

Suggest one reason to explain the relationship you have identified in (b)(i).

[ 1 ]

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3.1.13 (HL)—Human-driven selection question 1

Question (a)

Question (i)

Question (ii)