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IB Biology HL A3.1.2 Species As Groups with Shared Traits Questions

Practise IB Biology HL A3.1.2 by using shared structural and functional traits to recognize species, compare organisms and apply classification evidence.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify shared morphology and structural traits to recognize organisms as members of a species or broader taxonomic group.
  • Distinguish taxa using specific anatomical recognition features such as mammalian, primate, arthropod, mollusc, bird or conifer traits.
  • Use labelled diagrams, skull morphology or population data to compare organisms and apply the morphological species concept.

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Study A3.1.2—Species as groups with shared traits conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A3.1.2 Species As Groups with Shared Traits Questions question 1

[Maximum number: 2]

The diagram shows the range of heights and brain sizes found in four groups of hominids.

Figure for Question IB Biology HL A3.1.2 Species As Groups with Shared Traits Questions question 1 — IB Biology HL

Distinguish between the characteristics of the Australopithecus and H. erectus using the data.

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