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IB ESS HL 2.1.4 Taxonomist Tools Questions

Review IB ESS HL 2.1.4 by applying dichotomous keys, comparing specimens and using DNA surveys to identify organisms and assess taxonomic evidence.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • choose contrasting features to build a dichotomous identification key
  • use a supplied key and figure to identify organisms or species
  • explain key limitations caused by variation, development, sex, subjectivity, expertise and undiscovered species
  • compare identification using physical traits, specimens, DNA or protein, behaviour and habitat

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Study 2.1.4—Taxonomist tools conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB ESS HL 2.1.4 Taxonomist Tools Questions question 1

[Maximum number: 2]
Some trees found in the forests of California

Figure:Some trees found in the forests of California

Using Figure: Some trees found in the forests of California and the identification key below, identify species A and species B.

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