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IB Biology HL D2.1.9 Meiosis As Reduction Division Questions

Analyse how one replication and two meiotic divisions reduce chromosome number and produce haploid cells in IB Biology HL D2.1.9.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify homologous-chromosome separation in meiosis I and the resulting haploid nuclei or chromosome number.
  • Distinguish meiosis I from meiosis II by sister-chromatid separation and chromosome or chromatid outcomes.
  • Identify a meiosis stage or sequence from chromosome behaviour in an image or ordered event set.

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Study D2.1.9—Meiosis as reduction division conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D2.1.9 Meiosis As Reduction Division Questions question 1

[Maximum number: 2]

The micrograph shows a plant cell of Lilium grandiflorum during meiosis.

Figure for Question IB Biology HL D2.1.9 Meiosis As Reduction Division Questions question 1 — IB Biology HL

Identify, giving reasons, the stage of meiosis shown by this cell.

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