plumiEffects of climate change on organisms: Edexcel International A Level Biology questions
Edexcel International A Level Biology past-paper questions on 5.4.4 Effects of climate change on organisms, 2019–2025, with mark schemes and examiner’s reports where available.
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Q8(c)(i)
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All 13 questions on Effects of climate change on organisms, as a list
- June 2025, Unit 4, Q8(c)(i) (1 mark): Name one other anthropogenic activity that could affect the temperature of the sand. (1)
- June 2025, Unit 4, Q8(c)(ii) (6 marks): The Tpiv for flatback turtles is 29.4 °C. A temperature of 27.7 °C will result in all males and a temperature of 31.1 °C will result in all females being produc
- October 2024, Unit 5, Q7(c) (6 marks): Maize is a major food crop. The photograph shows a maize cob with rows of grains. (Source: © art nick/Shutterstock) Maize can be infected by a fungus. This fung
- October 2023, Unit 4, Q6(b)(ii) (2 marks): The scientists used the data to predict a relationship between the length of the young lizards and the percentage change in abundance of lizards over the 12 yea
- October 2023, Unit 6, Q3(f) (1 mark): Some scientists predict that climate change will increase the destruction of crops in East Africa. Suggest one reason why some scientists think this. (1)
- October 2022, Unit 4, Q8(c) (4 marks): Reforestation is one way to repair the damage caused to forests by climate change. Explain why the changes to the environment caused by climate change need to b
- January 2022, Unit 4, Q6(b)(iv) (3 marks): The graph shows the maximum temperature, for each month, in two regions of North America: Wheatland and Pole Mountain. 35 30 25 Maximum 20 temperature / °C 15 1
- January 2021, Unit 4, Q4(b) (3 marks): The distribution of species has been affected by climate change. The diagrams show how the distribution of one species, in a country in the Northern Hemisphere,
- January 2021, Unit 4, Q4(c)(i) (2 marks): Identify two conclusions that can be drawn from this study. (2)
- January 2021, Unit 4, Q4(c)(ii) (3 marks): Explain the differences in the results obtained for the male and female beetles kept at different temperatures. (3)
- October 2020, Unit 4, Q9(a)(ii) (2 marks): Calculate the percentage decrease in the number of moose from 1994 to 2016. (2) Answer %
- October 2020, Unit 4, Q9(a)(iii) (3 marks): It has been suggested that global warming is responsible for the decrease in the number of moose from 1994 to 2016. Sketch a graph to show this relationship. (3
- October 2020, Unit 4, Q9(b)(ii) (6 marks): The diagram shows the life cycle of the tick. Early spring June Female ticks, fully engorged on After several weeks’ dormancy, blood, drop off the moose. the fe
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