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IB ESS SL 2.1.4 Taxonomist Tools Questions

Practise IB ESS SL 2.1.4 taxonomist tools by using dichotomous keys, specimen comparison and DNA surveys to identify organisms and evaluate evidence.

Syllabus
First assessment 2026
Course
ESS SL
Level
SL

Exam points

  • select objective contrasting features to construct a dichotomous identification key
  • follow a supplied key and figure to identify organisms or species
  • explain key limitations from variation, development or sex, subjectivity, expertise and undiscovered species
  • compare identification methods: physical traits, specimens, DNA or protein analysis, behaviour and habitat

IB ESS SL 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 3 and the identification key below, identify species A and species B.

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