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IB Biology HL A3.1.3 Binomial System Questions

Practise IB Biology HL A3.1.3 by applying genus and species names, reading binomial nomenclature and using shared names to infer relatedness.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify the genus and species in a binomial name, applying the rules for capitalization, lowercase spelling and italics or underlining.
  • Use a shared genus to infer which species are most closely related and distinguish species assigned to different genera.
  • Explain how universal, unique binomial names avoid common-name confusion and support clear biological communication.

Learn this topic

Study A3.1.3—Binomial system conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A3.1.3 Binomial System Questions question 1

[Maximum number: 1]

The table shows the number of amino acids that are different in the sequences of the protein FOXP2 from a human compared with four other primate species.

Table for Question IB Biology HL A3.1.3 Binomial System Questions question 1 — IB Biology HL

Identify the total number of different genera named in the table.

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