plumiReproductive isolation and new species: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 4.6.3 Reproductive isolation and new species, 2019–2025, with mark schemes and examiner’s reports where available.
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Q8(c)(ii)
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All 7 questions on Reproductive isolation and new species, as a list
- June 2025, AS Unit 2, Q8(c)(ii) (6 marks): Explain how reproductive isolation could have led to the formation of these three species. Use your own knowledge and all the information from question 8 to sup
- June 2024, AS Unit 2, Q3(b)(ii) (5 marks): Explain how different species of gentoo penguin could have formed. Use the map to support your answer. (5)
- January 2024, AS Unit 2, Q8(a)(ii) (4 marks): Explain how isolation caused the formation of six fox populations with different characteristics. Use the information in the question to support your answer. (4
- June 2023, AS Unit 2, Q8(d)(ii) (6 marks): Explain how these subspecies of snow leopard could form. Use the information in the question to support your answer. (6)
- October 2022, AS Unit 2, Q7(b) (6 marks): Lake Nicaragua and Lake Managua are great lakes. Crater lakes were formed from the craters of volcanoes. The photographs show a great lake and a crater lake in
- June 2022, AS Unit 2, Q5(b) (6 marks): It is suggested that both of these Hawaiian honeycreeper species evolved from the same common ancestor. Explain how these two species of honeycreeper could have
- October 2020, AS Unit 2, Q8(c) (4 marks): Tristan albatross chicks in nests on one island have been found to be at risk of predation from mice. The diagram shows an albatross chick and two mice on this
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