plumiClassification: Edexcel International A Level Biology questions
Every Edexcel International A Level Biology exam question on Classification (specification points 4.14), 2019–2025, with its mark scheme and examiner’s report.
Paper
All papers
Exam
All years
Calculations
Q2(a)
The whole paper ↗Your answerQ8(c)(i)
The whole paper ↗Q6(b)(ii)
The whole paper ↗Q2(a)(i)
The whole paper ↗Q8(a)
The whole paper ↗Q1(b)(iv)
The whole paper ↗Q3(b)(i)
The whole paper ↗Q8(a)(iii)
The whole paper ↗Q4(a)(i)
The whole paper ↗Q8(d)(iii)
The whole paper ↗Q3(a)
The whole paper ↗Q5(a)
The whole paper ↗Q1(a)
The whole paper ↗Your answerQ5(c)
The whole paper ↗Q4(b)
The whole paper ↗Q1(c)
The whole paper ↗Q2(a)(iii)
The whole paper ↗Q3(a)(i)
The whole paper ↗Q3(a)(ii)
The whole paper ↗Q3(b)
The whole paper ↗
All 31 questions on Classification, as a list
- June 2025, AS Unit 2, Q2(a) (1 mark): Which domains contain prokaryotic organisms? 1. Archaea 2. Bacteria 3. Eukarya (1) A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3
- June 2025, AS Unit 2, Q8(c)(i) (2 marks): Explain how scientists could have determined that E. viridis was more closely related to E. lucunter than to E. vanbrunti. (2)
- January 2025, AS Unit 2, Q6(b)(ii) (2 marks): Explain how scientists could determine how closely related I. plenipes is to I. tobini. (2)
- October 2024, AS Unit 2, Q2(a)(i) (1 mark): State the domain which contains diatoms. (1)
- October 2024, AS Unit 2, Q8(a) (2 marks): A scientist suggested that the Akhal-Teke breed is the same as an older breed known as the Turkoman horse. Describe one piece of information that would need to
- June 2024, AS Unit 2, Q1(b)(iv) (1 mark): Organisms can be classified into three domains. State which of the three domains would contain an organism with the organelles X and Y. (1)
- June 2024, AS Unit 2, Q3(b)(i) (1 mark): Suggest one way that these penguins can be shown to belong to different species. (1)
- January 2024, AS Unit 2, Q8(a)(iii) (2 marks): Explain how molecular evidence could be used to determine which of the other five fox populations is the most closely related to the fox population on Santa Cru
- October 2023, AS Unit 2, Q4(a)(i) (1 mark): Both of these are found in the domain Bacteria. Give the names of the other two domains. (1) 1 2
- June 2023, AS Unit 2, Q8(d)(iii) (1 mark): Give a reason as to why these different populations are described as subspecies and not different species of snow leopard. (1)
- January 2023, AS Unit 2, Q3(a) (1 mark): Name the domain which would contain this organism. (1)
- January 2023, AS Unit 2, Q5(a) (2 marks): Describe how scientists could determine that this was a new type of bacteria. (2)
- October 2022, AS Unit 2, Q1(a) (1 mark): How many of the domains contain prokaryotic organisms? (1) A none B one C two D three
- June 2022, AS Unit 2, Q5(c) (2 marks): Explain how scientists could determine which of the 17 other species of honeycreeper on these islands is the most closely related to the Hawaii palila honeycree
- June 2022, Unit 4, Q4(b) (4 marks): Genetic studies indicate that the regent honeyeater is related to wattlebirds. Describe how genetic studies could show this. (4)
- January 2022, AS Unit 2, Q1(c) (4 marks): The other domains in the three‑domain system are Archaea and Bacteria. Complete the table to show in which of the domains the following structures would be foun
- October 2021, AS Unit 2, Q2(a)(iii) (1 mark): State what is meant by the term species. (1)
- October 2021, AS Unit 2, Q3(a)(i) (1 mark): Give one example of the molecular evidence used to support the three‑domain system. (1)
- October 2021, AS Unit 2, Q3(a)(ii) (2 marks): Describe the role of the scientific community in evaluating the evidence for this system of classification. (2)
- October 2021, AS Unit 2, Q3(b) (4 marks): The table shows some features of living organisms. Which box in each row shows whether the feature is found in these domains? (4) Archaea and Archaea and Archae
- June 2021, AS Unit 2, Q2(b)(i) (2 marks): Describe the information the scientists would have used to classify M. smithii into the Archaea domain. (2)
- June 2021, AS Unit 2, Q2(b)(ii) (3 marks): Scientists have identified a similar microorganism in the human mouth. This microorganism is called Methanobrevibacter oralis (M. oralis). Explain how the scien
- January 2021, AS Unit 2, Q4(a) (2 marks): The body of this species of harvest mouse is 55 mm to 75 mm long and its tail is 50 mm to 75 mm long. The body of the Indian flat-haired mouse is 10 cm to 12 cm
- October 2020, AS Unit 2, Q8(b) (1 mark): The Tristan albatross (Diomedea dabbenena) was once classified as the same species as the wandering albatross (Diomedea exulans). The photograph shows a wanderi
- October 2020, Unit 4, Q7(a)(ii) (3 marks): Explain why fungi are not classified as bacteria, plants or animals. Use the information in the diagram and your knowledge of cell structure to support your ans
- January 2020, AS Unit 2, Q5(a)(ii) (1 mark): State the domain in which this kingfisher is classified. (1)
- January 2020, AS Unit 2, Q5(b)(i) (2 marks): Using the proposed reclassification, explain which species of kingfisher are most closely related to Ceyx madagascariensis. (2)
- January 2020, AS Unit 2, Q5(b)(ii) (6 marks): Explain how molecular evidence led to the reclassification of species and how the scientific community would have reviewed the evidence before it was accepted.
- January 2020, Unit 4, Q4(b)(iii) (3 marks): This moth was seen and a specimen collected in 1887. It was not seen again in the rainforests of Malaysia until 2017. The DNA of these recently rediscovered Ori
- June 2019, AS Unit 2, Q2(a) (1 mark): State what is meant by the term species. (1)
- June 2019, AS Unit 2, Q5(a)(i) (1 mark): State the genus to which this plant belongs. (1)
Questions, mark schemes and examiner’s reports are © Pearson Edexcel, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Every Edexcel International A Level Biology paper.
Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.