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IB Biology HL A3.1.14 Hl Dichotomous Key Development Questions

Practise IB Biology HL A3.1.14 by developing and applying dichotomous keys to classify organisms from visible recognition features in unfamiliar specimens.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Apply a dichotomous key by selecting contrasting observable features at each paired yes/no branch.
  • Design missing key steps from a character matrix using observable traits that separate named organisms.
  • Identify an organism from a dichotomous key and state the recognition feature that supports the choice.

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Study A3.1.14 (HL)—Dichotomous key development conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL A3.1.14 Hl Dichotomous Key Development Questions question 1

[Maximum number: 1]

The following shows a dichotomous key.

Figure for Question IB Biology HL A3.1.14 Hl Dichotomous Key Development Questions question 1 — IB Biology HL
Table for Question IB Biology HL A3.1.14 Hl Dichotomous Key Development Questions question 1 — IB Biology HL

Using the dichotomous key above, identify the genus of bird W and bird Z .
Bird W:
Bird Z:

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