Practice IB Environmental systems and societies (ESS) Topic Topic 3: Conservation and Biodiversity with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Topic 3: Conservation and Biodiversity and mirrors Paper 1, 2 style where relevant.
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Describe the role of isolation in the process of speciation.
Explain how the following mechanisms contribute to maintaining genetic variation in populations:
Heterozygote advantage
Frequency-dependent selection
Explain how genetic drift can lead to changes in allele frequencies in small populations.
Describe two methods for conserving biodiversity ex situ.
Describe two methods for measuring biodiversity in an ecosystem.